The file is probably removed from the bin-folder when you build the project.
I usually put .dll-files in a separate folder, then reference them from that folder and makes sure that "Copy Local" is set to true for the reference.
Hope this will help. :)
The dll-files is located in another folder and I've tried "Copy Local" to both false and true.
I think the problem is that your code have a namespace or class called UI or EPiServer
Double check the actual xml of your .csproj file and make sure that the reference is in there.
It should be something similar to
<Reference Include="EPiServer.UI, Version=6.0.530.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>bin\EPiServer.UI.dll</HintPath>
</Reference>
Hi, EPiServer.UI.dll is depended on some other assemblies, Microsoft.Web.Services3.dll and System.Web.DataVisualization.dll if memory serves me right.
Frederik
Thanks Frederik Vig for the advice! The problem resolved utself when i installed MS Charting.
Microsoft Chart Controls did the trick. Install it from http://www.microsoft.com/download/en/details.aspx?id=14422
This thing have been bothering me for a couple of days now.
When I try to build my project I get the errormessage: "Error 106 The type or namespace name 'UI' does not exist in the namespace 'EPiServer' (are you missing an assembly reference?)" and the I loose the intellisence for EPiserver.UI. The weird thing is that if I remove either Episerver.dll or Episerver.UI.dll and then ad them again to my References I get Intellisense back and my project finds the EPiServer.UI-namespace. That is, until I try to build it again.
The only co-worker (who wrote the code) I can ask about this problem has been sick all week