IPostBackEventHandler Interface
.NET Framework (current version)
Defines the method ASP.NET server controls must implement to handle postback events.
Assembly: System.Web (in System.Web.dll)
| Name | Description | |
|---|---|---|
![]() | RaisePostBackEvent(String) | When implemented by a class, enables a server control to process an event raised when a form is posted to the server. |
To create a server control that captures form submission information from the browser, you must implement this interface. For more information on how to use this interface, see Server Event Handling in ASP.NET Web Forms Pages.
The following code example defines a custom button server control that causes postback, captures the postback event using the RaisePostBackEvent method, and raises a Click event on the server.
Imports System Imports System.Web.UI Imports System.Collections Imports System.Collections.Specialized Namespace CustomControls <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> Public Class MyButton Inherits Control Implements IPostBackEventHandler ' Define the Click event. Public Event Click As EventHandler ' Invoke delegates registered with the Click event. Protected Overridable Sub OnClick(e As EventArgs) RaiseEvent Click(Me, e) End Sub ' Define the method of IPostBackEventHandler that raises change events. Public Sub RaisePostBackEvent(eventArgument As String) _ Implements IPostBackEventHandler.RaisePostBackEvent OnClick(New EventArgs()) End Sub Protected Overrides Sub Render(output As HtmlTextWriter) output.Write("<INPUT TYPE = submit name = " & Me.UniqueID & _ " Value = 'Click Me' />") End Sub End Class End Namespace
.NET Framework
Available since 1.1
Available since 1.1
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