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)> _
Public NotInheritable Class DataBindingHandlerAttribute
	Inherits Attribute
Dim instance As DataBindingHandlerAttribute

/** @attribute AttributeUsageAttribute(AttributeTargets.Class) */ 
public final class DataBindingHandlerAttribute extends Attribute
public final class DataBindingHandlerAttribute extends Attribute
Not applicable.

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.

Namespace CustomControls

  <DataBindingHandler(GetType(MyDataBindingHandler)), ToolboxData("<{0}:MyLabel runat=server></{0}:MyLabel>")>  _
    Public Class MyLabel
      Inherits Label
      Public Sub New()
        'Insert your code here.
      End Sub 'New
    End Class 'MyLabel
    Public Class MyDataBindingHandler
      Inherits DataBindingHandler
      Public Overrides Sub DataBindControl(host As IDesignerHost, control As Control)
         CType(control, Label).Text = "Added by data binding handler."
      End Sub 'DataBindControl
    End Class 'MyDataBindingHandler
End Namespace 'CustomControls 

package CustomControls;

import System.*;
import System.Collections.*;
import System.Web.UI.*;
import System.Web.UI.Design.*;
import System.Web.UI.WebControls.*;
import System.ComponentModel.*;
import System.ComponentModel.Design.*;

/** @attribute DataBindingHandler(MyDataBindingHandler.class)
    @attribute ToolboxData("<{0}:MyLabel runat=server></{0}:MyLabel>")

public class MyLabel extends Label
    public MyLabel()
        // Insert your code here.
    } //MyLabel
} //MyLabel

public class MyDataBindingHandler extends DataBindingHandler
    public void DataBindControl(IDesignerHost host, Control control)
        ((Label)control).set_Text("Added by data binding handler.");
    } //DataBindControl
} //MyDataBindingHandler

  • AspNetHostingPermission  for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.


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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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