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DataBindingHandlerAttribute Class

Specifies a design-time class that performs data binding of controls within a designer. This class cannot be inherited.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

[AttributeUsageAttribute(AttributeTargets.Class)]
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class DataBindingHandlerAttribute : Attribute

For more information about using attributes, see Extending Metadata Using Attributes.

The following code example defines a data-binding handler, named MyDataBindingHandler, to be used by the designer in editing mode. On exiting the editing mode, the Text property value is displayed.

using System;
using System.Collections;
using System.Web.UI;
using System.Web.UI.Design;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.ComponentModel.Design;


namespace CustomControls
{
  [
    DataBindingHandler(typeof(MyDataBindingHandler)),
    ToolboxData("<{0}:MyLabel runat=server></{0}:MyLabel>")
  ]
  public class MyLabel : Label 
  {
    public  MyLabel()
    { 
      // Insert your code here.
    } 
  }

  public class MyDataBindingHandler : DataBindingHandler
  {
    public override void DataBindControl(IDesignerHost host, Control control)
    {
      ((Label)control).Text = "Added by data binding handler.";
    }
  }

}

System.Object
  System.Attribute
    System.Web.UI.DataBindingHandlerAttribute

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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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