Blog posts by Vladimir Terziyski2010-09-19T15:40:25.0000000Zhttps://world.optimizely.com/blogs/Vladimir-Terziyski/ Optimizely World EventReplication service with TCP<p>When dealing with multiple servers in load balancing scenario, you have to use EventReplication service in EPiServer in order to synchronize them. By default EPiServer comes with UDP synchronization but this won't work if multicast UDP is disabled by network administrators. The second options is to use TCP. If the version of EPiServer allows it you can enable port sharing: </p> <div style="border-bottom: silver 1px solid; text-align: left; border-left: silver 1px solid; padding-bottom: 4px; line-height: 12pt; background-color: #f4f4f4; margin: 20px 0px 10px; padding-left: 4px; width: 97.5%; padding-right: 4px; font-family: 'Courier New', courier, monospace; direction: ltr; max-height: 600px; font-size: 8pt; overflow: auto; border-top: silver 1px solid; cursor: text; border-right: silver 1px solid; padding-top: 4px" id="codeSnippetWrapper"> <div style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12px; border-right-style: none; background-color: #f4f4f4; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 12px; border-left-style: none; overflow: visible; padding-top: 0px" id="codeSnippet"> <pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum1"> 1:</span> <span style="color: #0000ff"><</span><span style="color: #800000">bindings</span><span style="color: #0000ff">></span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum2"> 2:</span> <span style="color: #0000ff"><</span><span style="color: #800000">nettcpbinding</span><span style="color: #0000ff">></span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum3"> 3:</span> <span style="color: #0000ff"><</span><span style="color: #800000">binding</span> <span style="color: #ff0000">name</span><span style="color: #0000ff">="PortBinding"</span> <span style="color: #ff0000">portSharingEnabled</span><span style="color: #0000ff">="true"</span> <span style="color: #0000ff">/></span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum4"> 4:</span> <span style="color: #0000ff"></</span><span style="color: #800000">nettcpbinding</span><span style="color: #0000ff">></span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: white; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum5"> 5:</span> <span style="color: #0000ff"></</span><span style="color: #800000">bindings</span><span style="color: #0000ff">></span> </pre>
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<div>Here you can check more about specific implementation details: <a href="http://world.episerver.com/FAQ/Items/Multicast-UDP-not-working/">http://world.episerver.com/FAQ/Items/Multicast-UDP-not-working/</a>
<br /><a href="http://blog.fredrikhaglund.se/blog/2009/09/22/episerver-cms-how-to-configure-remote-events-with-many-servers-and-firewalls-between-them/">http://blog.fredrikhaglund.se/blog/2009/09/22/episerver-cms-how-to-configure-remote-events-with-many-servers-and-firewalls-between-them/</a></div>
<p>However when using specific ports for different endpoints, only one port per endpoint is allowed. If you set to endpoints to use the same port - the following exception will be thrown:
<br />"System.Net.Sockets.SocketException: Only one usage of each socket address (protocol/network address/port) is normally permitted"
<br />This exception can occur even when using different ports. Consider the following example:
<br />I've created a page which has method that freezes the current thread for fifty seconds: Thread.Sleep(50000)
<br />After the thread has been put to sleep, I've recycled the application pool manually. The next request which I've made to a different page in the same website returned the exception, which I've mentioned before. Why is this happening? There is feature in IIS 6 and IIS 7 called "overlapped recycling". When activated if application pool is recycled, the next request will create a new worker process (w3wp) even if the old one is not terminated yet. This way the two processes will try to use the same port.
<br />By default the application pools is recycled every 1740 minutes. This means that if your website is performing long running operation after recycle the exception can be thrown. To disable overlapped recycling in IIS6 you have to set DisallowOverlappingRotation metabase property to true <a href="http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/24e3c22e-79a9-4f07-a407-dbd0e7f35432.mspx?mfr=true">http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/24e3c22e-79a9-4f07-a407-dbd0e7f35432.mspx?mfr=true</a>. In IIS7 select the application pool -> Advanced Settings -> Recycling section and set Disable Overlapped Recycling it to true. Also I recommend to set a specific time for recycling the website when it is less visited. This is because the worker process, which handles the request after recycle will wait for terminating the first one and is better to set it to a time when the website visit rate is lower.  </p>2010-09-19T15:40:25.0000000ZBlog post Using VirtualPathVersioningProvider in precompiled website<p>Versioning file system in EPiServer 5 is handled by VirtualPathVersioningProvider which is the default provider in EPiServer 5. Recently I had to resolve an issue with not registering the provider in precompiled website. There is a workaround <a href="http://sunali.com/2008/01/09/virtualpathprovider-in-precompiled-web-sites/" target="_blank">here</a>, but Coşkun's article shows how to register your custom provider, which probably won't require initialized EPiServer ClassFactory like the versioning provider. In my company we use such provider for some projects and this workaround works great. However, if you try to register EPiServer's versioning provider it will throw "ClassFactory not initialized" exception. This happens because somewhere deep in the constructor initialization logic of the provider there is a call to EPiServer.BaseLibrary.Context which requires Classfactory. Ted Nyberg wrote an <a href="http://labs.episerver.com/en/Blogs/Ted-Nyberg/Dates/112276/9/How-to-make-virtual-path-providers-work-with-precompiled-EPiServer-websites/" target="_blank">improved version</a> of Coşkun's fix but again he is using VirtualPathUnifiedProvider and not the Versioning provider. </p> <p>If you examine EPiServer's global asax in reflector you will see that there is a call to SetupBaseLibrary (used for initialization of ClassFactory) which has to be called before InitializeVirtualPathProviders. Where these method are called depends on the EPiServer version for example in EPiServer CMS 5 SP2 they are located in Global class contructor. In the next service pack 3 - they called on the first request to the website: </p> <div style="border-bottom: silver 1px solid; text-align: left; border-left: silver 1px solid; padding-bottom: 4px; line-height: 12pt; background-color: #f4f4f4; margin: 20px 0px 10px; padding-left: 4px; width: 97.5%; padding-right: 4px; font-family: 'Courier New', courier, monospace; direction: ltr; height: 262px; max-height: 200px; font-size: 8pt; overflow: auto; border-top: silver 1px solid; cursor: text; border-right: silver 1px solid; padding-top: 4px" id="codeSnippetWrapper"> <div style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px" id="codeSnippet"> <pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum1"> 1:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">void</span> Global_BeginRequest(<span style="color: #0000ff">object</span> sender, EventArgs e)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum2"> 2:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum3"> 3:</span> <span style="color: #0000ff">if</span> (_isFirstApplicationRequest)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum4"> 4:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum5"> 5:</span> <span style="color: #0000ff">lock</span> (_setupLock)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum6"> 6:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum7"> 7:</span> <span style="color: #0000ff">if</span> (_isFirstApplicationRequest)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum8"> 8:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum9"> 9:</span> StaticInitialization(); </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum10"> 10:</span> ...</pre>
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<p>Inside this StaticInitialization method there are calls to SetupBaseLibrary() and InitializeVirtualPathProviders(). </p>
<p>This means that registering the Versioninng provider will work if it is called after SetupBaseLibrary()</p>
<p>In SP2 this is right in Application_Start method in Global.asax file. Here is the Ted's example modified to use Versioning provider:</p>
<div style="border-bottom: silver 1px solid; text-align: left; border-left: silver 1px solid; padding-bottom: 4px; line-height: 12pt; background-color: #f4f4f4; margin: 20px 0px 10px; padding-left: 4px; width: 97.5%; padding-right: 4px; font-family: 'Courier New', courier, monospace; direction: ltr; max-height: 600px; font-size: 8pt; overflow: auto; border-top: silver 1px solid; cursor: text; border-right: silver 1px solid; padding-top: 4px" id="codeSnippetWrapper">
<div style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px" id="codeSnippet">
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum1"> 1:</span> <span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> Application_Start(Object sender, EventArgs e)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum2"> 2:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum3"> 3:</span> InitializeVersioningProvider();</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum4"> 4:</span> }</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum5"> 5:</span> </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum6"> 6:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">void</span> InitializeVersioningProvider()</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum7"> 7:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum8"> 8:</span> <span style="color: #008000">// if current provider is not episerverversioning provider</span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum9"> 9:</span> <span style="color: #0000ff">if</span> (System.Web.Hosting.HostingEnvironment.VirtualPathProvider.GetType() != <span style="color: #0000ff">typeof</span>(VirtualPathVersioningProvider))</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum10"> 10:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum11"> 11:</span> <span style="color: #008000">//Create a list of providers to add </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum12"> 12:</span> List<VirtualPathVersioningProvider> providersToAdd =</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum13"> 13:</span> <span style="color: #0000ff">new</span> List<VirtualPathVersioningProvider>();</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum14"> 14:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum15"> 15:</span> <span style="color: #008000">//Iterate through the virtual path declarations </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum16"> 16:</span> <span style="color: #008000">//in web.config and add a provider for each one </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum17"> 17:</span> <span style="color: #0000ff">foreach</span> (ProviderSettings settings <span style="color: #0000ff">in</span> EPiServerSection.Instance.VirtualPathSettings.Providers)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum18"> 18:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum19"> 19:</span> <span style="color: #008000">//Create a provider instance based on the </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum20"> 20:</span> <span style="color: #008000">//settings specified in web.config </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum21"> 21:</span> VirtualPathVersioningProvider newProvider =</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum22"> 22:</span> <span style="color: #0000ff">new</span> VirtualPathVersioningProvider(</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum23"> 23:</span> settings.Name,</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum24"> 24:</span> settings.Parameters);</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum25"> 25:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum26"> 26:</span> <span style="color: #008000">//Add the provider to the list </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum27"> 27:</span> providersToAdd.Add(newProvider);</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum28"> 28:</span> }</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum29"> 29:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum30"> 30:</span> <span style="color: #008000">//Loop through the providers to add and register them </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum31"> 31:</span> <span style="color: #0000ff">foreach</span> (VirtualPathVersioningProvider provider <span style="color: #0000ff">in</span> providersToAdd)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum32"> 32:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum33"> 33:</span> <span style="color: #008000">//Get a reference to the current </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum34"> 34:</span> <span style="color: #008000">//HostingEnvironment class </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum35"> 35:</span> <span style="color: #008000">//Note that a private member name belonging to </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum36"> 36:</span> <span style="color: #008000">//the .NET framework is used! </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum37"> 37:</span> HostingEnvironment he =</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum38"> 38:</span> (HostingEnvironment)<span style="color: #0000ff">typeof</span>(HostingEnvironment).InvokeMember(<span style="color: #006080">"_theHostingEnvironment"</span>, BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.GetField, <span style="color: #0000ff">null</span>, <span style="color: #0000ff">null</span>, <span style="color: #0000ff">null</span>);</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum39"> 39:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum40"> 40:</span> <span style="color: #008000">//Ensure the hosting environment was retrieved </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum41"> 41:</span> <span style="color: #0000ff">if</span> (he == <span style="color: #0000ff">null</span>)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum42"> 42:</span> <span style="color: #0000ff">return</span>;</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum43"> 43:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum44"> 44:</span> <span style="color: #008000">//Use reflection to get a reference to the internal </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum45"> 45:</span> <span style="color: #008000">//RegisterVirtualPathProviderInternal method </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum46"> 46:</span> MethodInfo mi = <span style="color: #0000ff">typeof</span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum47"> 47:</span> (HostingEnvironment).GetMethod</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum48"> 48:</span> (<span style="color: #006080">"RegisterVirtualPathProviderInternal"</span>,</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum49"> 49:</span> BindingFlags.NonPublic | BindingFlags.Static);</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum50"> 50:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum51"> 51:</span> <span style="color: #008000">//Ensure the method was retrieved </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum52"> 52:</span> <span style="color: #0000ff">if</span> (mi == <span style="color: #0000ff">null</span>)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum53"> 53:</span> <span style="color: #0000ff">return</span>;</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum54"> 54:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum55"> 55:</span> <span style="color: #008000">//Invoke the RegisterVirtualPathProviderInternal </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum56"> 56:</span> <span style="color: #008000">//method to register the virtual path provider </span></pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum57"> 57:</span> mi.Invoke(he,</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum58"> 58:</span> <span style="color: #0000ff">new</span> <span style="color: #0000ff">object</span>[] </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum59"> 59:</span> { </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum60"> 60:</span> (VirtualPathProvider)provider </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum61"> 61:</span> });</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum62"> 62:</span> }</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum63"> 63:</span> }</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum64"> 64:</span> }</pre>
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<p>I've changed the first line to check if the current provider is not VersioningProvider, because using if(VirtualPathHandler.PageFolderProvider == null) will always fail. This is because Application_Start event is fired after EPiServer's InitializeVirtualPathProviders() so PageFolderProvider is not null. </p>
<p>In Service pack 3 the InitializeVirtualPathProvider is called on first request so global.asax has to be changed a little: </p>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum1"> 1:</span> <span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> Application_Start(Object sender, EventArgs e)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum2"> 2:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum3"> 3:</span> EPiServer.Global.Application_FirstBeginRequest += <span style="color: #0000ff">new</span> EventHandler(Global_Application_FirstBeginRequest);</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum4"> 4:</span> }</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum5"> 5:</span>  </pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum6"> 6:</span> <span style="color: #0000ff">protected</span> <span style="color: #0000ff">void</span> Global_Application_FirstBeginRequest(<span style="color: #0000ff">object</span> sender, EventArgs e)</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum7"> 7:</span> {</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum8"> 8:</span> InitializeVersioningProvider();</pre>
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<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; border-right-style: none; background-color: #f4f4f4; margin: 0em; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; font-size: 8pt; border-left-style: none; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum9"> 9:</span> }</pre>
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<p>In CMS 5 R2 SP2 version this provider initialization logic is moved to EPiServer.Web.InitializationModule class. One options is to put InitializeVersioningProvider in to a separate module and assure it is called after the EPiServer module. However I've didn't try this scenario.</p>2010-07-02T21:03:46.0000000ZBlog post Using EPiServer VirtualPathUnifiedProvider<p>Searching the Internet for EPiServer's VirtualPathUnifiedProvider, I didn't find much information. <br />So here I'm going to show you some basic examples how you can use it in your EPiserver projects. </p> <p>VirtualPathUnifiedProvider inherits from asp.net VirtualPathProvider, and adds new functionality. It serves as a base class to all unified providers like VirtualPathNativeProvider, VirtualPathVersioningProvider. It is not ment to be used directly therefore it is abstract and you can use it to implement your own file system, for example a database file system. The most important classes which this provider works with are UnifiedDirectory, UnifiedFile, UnifiedSummary, UnifiedVersion.</p> <p>Accessing files and folders.</p> <p> VirtualPathUnifiedProvider vpp = <br />            System.Web.Hosting.HostingEnvironment.VirtualPathProvider as VirtualPathUnifiedProvider;</p> <p>        if (vpp != null) <br />        { <br />            // get all file names in a directory <br />            List<string> fileNames = new List<string>(); <br />            UnifiedDirectory dir = vpp.GetDirectory("/upload") as UnifiedDirectory; <br />            if (dir != null) <br />            { <br />                System.Collections.IEnumerable allFiles = dir.Files; <br />                foreach (UnifiedFile file in allFiles) <br />                { <br />                    fileNames.Add(file.Name); <br />                } <br />            } <br />            // get all subdirectories <br />            List<string> subdirectoryNames = new List<string>(); <br />            if (dir != null) <br />            { <br />                System.Collections.IEnumerable allSubDirs = dir.Directories; <br />                foreach (UnifiedDirectory subDir in allSubDirs) <br />                { <br />                    subdirectoryNames.Add(subDir.Name); <br />                } <br />            } <br />        }</p> <p>The check here for vpp is neccessary because the current registered provider can be of another type. <br />GetDirectory is base method of VirtualDirectory. If it doesn't find such directory it's result will vary depending of your custom provider implementation. For example it can be null, or MapPathBasedVirtualDirectory. </p> <p>Creating file and subdirectories is straightforward: <br /> if (dir != null) <br /> { <br /> // create new file <br />    UnifiedFile newFile = dir.CreateFile("CustomContentFile.txt"); <br />    using (Stream fs = newFile.Open(FileMode.Create, FileAccess.ReadWrite, FileShare.None)) <br />    { <br />        using (StreamWriter writer = new StreamWriter(fs)) <br />        { <br />            writer.WriteLine("Custom content"); <br />     } <br /> } <br />  // Create and copy subdirectory <br /> if (dir != null) <br /> { <br />    UnifiedDirectory subdir1 = dir.CreateSubdirectory("subdirectory1"); <br />    UnifiedDirectory subdir2 = dir.CreateSubdirectory("subdirectory2"); <br />    subdir2.CopyTo(VirtualPathUtility.Combine(subdir1.VirtualPath, subdir2.Name)); <br />  } <br />}</p> <p>FileMode options here can vary. It can be either Create or CreateNew. FileMode.Open can be used if the file already exists and you want to write to it, instead of creating a new one. When copying a directory, the new path has to be specified. This is why the destination path of subdir1 is combined with the name of subdir2. </p> <p>System.Web.VirtualPathUtility is used for file and directory related operations. It has various helper methods like Combine, GetDirectory, GetExtension, GetFileName, IsAbsolute, etc.  </p> <p>This example renames already existing file:</p> <p>UnifiedFile customFile = vpp.GetFile("/Upload/CustomContentFile.txt") as UnifiedFile; <br />if (customFile != null) <br />{ <br />    string destinationDir = VirtualPathUtility.GetDirectory(customFile.VirtualPath); <br />    customFile.MoveTo(VirtualPathUtility.Combine(destinationDir, "NewFilename.txt")); <br />}</p> <p>MoveTo can be used either for renaming or moving a file. If destination directory is the same as the source file directory - the file name will be changed, otherwise the file will be moved to the new location. </p> <p>These are some of the basic operations, which you can do with VirtualPathUnifiedProvider. However, if you create a custom implementation, its behavior can be slightly different. One great way to test it is by EPiServer's file manager. If everything works fine there, then these examples  should work also. </p>2010-03-26T15:04:05.0000000ZBlog post