ResourceExpressionEditorSheet Class

Note: This class is new in the .NET Framework version 2.0.

Represents a design-time editor sheet for the properties of a resource expression in the UI of a designer host at design time.

Namespace: System.Web.UI.Design
Assembly: System.Design (in

public class ResourceExpressionEditorSheet : ExpressionEditorSheet
public class ResourceExpressionEditorSheet extends ExpressionEditorSheet
public class ResourceExpressionEditorSheet extends ExpressionEditorSheet

The visual designer uses the ResourceExpressionEditor class with the ResourceExpressionEditorSheet class to select the individual properties of a resource reference expression, and to combine the selected resource expression property values into a resource expression.

The ConnectionStringsExpressionEditor.GetExpressionEditorSheet method returns a ResourceExpressionEditorSheet object. In the expressions dialog box, when you select a control property and bind it to a resource expression, the visual designer calls the GetExpressionEditorSheet method. The visual designer uses the returned ResourceExpressionEditorSheet object to prompt for the ClassKey and ResourceKey properties. Once the resource expression properties are selected, the visual designer calls the GetExpression method to combine the properties into a resource expression string.

The ResourceKey property must be specified in a resource expression; it indexes the resource value. The ClassKey property is optional. It references the class key or file name that defines the resource in the global resources folder.

The following code example demonstrates how to bind the Text property of a HyperLink control to a resource expression using the ResourceExpressionEditor. To use the example:

  1. In a Web site project, add a new resource file named Strings.resx to the App_GlobalResources folder.

  2. Add a string named myLinkText to the Strings.resx resource file, and set the value to the text for a HyperLink control. For example, set the myLinkText string value to This is a link.

  3. In an ASP.NET Web page, add a HyperLink control.

  4. In the property grid for the Hyperlink control, click Expressions, and click the ellipsis button (...) to display the expression binding dialog box.

  5. Select the Text property of a control, and set Expression Type to the Resources expression type. The visual designer displays the resource expression properties defined by the ResourceExpressionEditorSheet object.

  6. Set the Expression Properties as follows:

    • Set ClassKey to Strings, the class name for the compiled Strings.resx resource file.

    • Set ResourceKey to myLinkText, the string name in Strings.resx.

The visual designer uses the ResourceExpressionEditor object to assign the resource expression for the Text property. The following aspx source shows an example of a property value set using a resource expression:

<!-- Define a hyperlink that maps the Text property to the
     myLinkText string value in the Strings.resx resource file. -->
<asp:HyperLink runat="server" ID="HyperLink2" 
     Text="<%$ Resources:Strings, myLinkText %>"


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0