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Class UserControlBase

A utility class to simplify the code in user controls.

Inheritance
System.Object
UserControlBase
UserControlBase<T>
TaskBase
Implements
Namespace: EPiServer
Assembly: EPiServer.dll
Version: 9.12.2
Syntax
public class UserControlBase : UserControl, IRenderSettings
Remarks

UserControlBase is to EPiServer Web user controls what PageBase is to EPiServer page templates - it provides access to the EPiServer infrastructure. Letting a Web user control inherit EPiServer.UserControlBase instead of the default UserControl turns the standard User Control class into a fully-fledged EPiServer Universe member, with access to EPiServer Web pages and current configuration settings, among other things.

By inheriting from the UserControlBase class you do not have to cast the Page property of the UserControl class to a PageBase class. Instead use the CurrentPage and the other members like you would directly from PageBase or TemplatePage.

The purpose is to give access to frequently used methods and properties of the PageBase class without having to cast the Page property.

note

This class does not implement IPageSource, even though it mimics the interface by having all the IPageSource methods. The reason for this is that if UserControlBase really implemented IPageSource, it would cause controls such as Property to become contained and non-editable via dope.

Examples
  The following example demonstrates how to inherit from the <strong>UserControlBase</strong> class.

    // Visual Studio.NET adds user controls with this inheritance
public abstract class Header : System.Web.UI.UserControl
{
// ...
}
    // Change it to inherit from UserControlBase

public abstract class Header : UserControlBase
{
    // ...
}</code></pre>

Constructors

UserControlBase()

Initializes a new instance of the UserControlBase class.

Declaration
public UserControlBase()

Properties

CurrentPage

Get the page data for the current page.

Declaration
public virtual PageData CurrentPage { get; set; }
Property Value
Type Description
PageData
Remarks
CurrentPage

LocalizationService

The localizationService used by the various Translate methods on UserControlBase.

Declaration
protected virtual LocalizationService LocalizationService { get; }
Property Value
Type Description
LocalizationService

Locate

Gets the object used to resolve services part of the public API.

Declaration
public ServiceLocationHelper Locate { get; }
Property Value
Type Description
ServiceLocationHelper

PageBase

Return the executing Page cast to a PageBase class.

Declaration
public virtual PageBase PageBase { get; }
Property Value
Type Description
PageBase
Remarks

Only PageBase differs between UserControlBase and PageBase. All the other properties and methods have the same purpose in both PageBase and UserControlBase.

RenderSettings

Dictionary of key values that can be used to customize the rendering of the property.

Declaration
public IDictionary<string, object> RenderSettings { get; set; }
Property Value
Type Description
System.Collections.Generic.IDictionary<System.String, System.Object>

The render settings.

Methods

GetChildren(PageReference)

Returns a PageDataCollection of child Pages to specified PageReference (from IPageSource).

Declaration
public virtual PageDataCollection GetChildren(PageReference pageLink)
Parameters
Type Name Description
PageReference pageLink
Returns
Type Description
PageDataCollection

GetPage(PageReference)

Returns the corresponding PageData object to the supplied PageReference reference (from IPageSource).

Declaration
public virtual PageData GetPage(PageReference pageLink)
Parameters
Type Name Description
PageReference pageLink
Returns
Type Description
PageData

IsValue(String)

Determine if the named property exists and holds a non-null value.

Declaration
public virtual bool IsValue(string propertyName)
Parameters
Type Name Description
System.String propertyName

The name of the page property to check.
Returns
Type Description
System.Boolean

True if the property exists with a valid value.

LoadDisplayTemplate(BlockData)

Resolves and instantiates the web or user control for the BlockData.

Declaration
public virtual Control LoadDisplayTemplate(BlockData blockData)
Parameters
Type Name Description
BlockData blockData

The block data to populate the control with.
Returns
Type Description
System.Web.UI.Control

RegisterClientScriptFile(String)

Helper method to register a client script file. If the method is called multiple times using the same key, only a single instance of the file is registered.

Declaration
public virtual void RegisterClientScriptFile(string rootRelativePath)
Parameters
Type Name Description
System.String rootRelativePath

The script file that should be referenced.
Remarks

The relativePath will be used as the unique script key.

Translate(String)

Translate the key into a language specific text.

Declaration
protected virtual string Translate(string key)
Parameters
Type Name Description
System.String key

A simplified XPath expression. See Remarks below.
Returns
Type Description
System.String

A string with the translated text.
Remarks
Translate(String)

TranslateFallback(String, String)

Translate the key into a language specific text. Will return supplied fallback string if no match is found.

Declaration
protected virtual string TranslateFallback(string key, string fallback)
Parameters
Type Name Description
System.String key

A simplified XPath expression. See Remarks below.
System.String fallback

The string to return if no match was found for key.
Returns
Type Description
System.String

A string with the translated text.
Remarks
Translate(String)

TranslateForScript(String)

Translate the key into a language-specific and script-safe text.

Declaration
protected virtual string TranslateForScript(string key)
Parameters
Type Name Description
System.String key

A simplified XPath expression. See Remarks below.
Returns
Type Description
System.String

A string with the translated text.
Remarks
TranslateForScript(String)

Implements

Extension Methods