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Wizard.OnPreviousButtonClick Method

Raises the PreviousButtonClick event.

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

protected virtual void OnPreviousButtonClick(
	WizardNavigationEventArgs e

The PreviousButtonClick event is raised when the Previous button is clicked.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnPreviousButtonClick method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding the OnPreviousButtonClick method in a derived class, be sure to call the OnPreviousButtonClick method of the base class so that registered delegates receive the event.

The following code example demonstrates how to specify an event handler for the PreviousButtonClick event. Each time the Previous button is clicked, the BorderWidth property for the Wizard control is decreased by 1 pixel, as measured by the Unit class.

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  void OnNextButtonClick(object sender, WizardNavigationEventArgs e)
    // When the Next button is clicked, increase the 
    // Wizard1.BorderWidth by 1.
    Wizard1.BorderWidth = Unit.Pixel((int)(Wizard1.BorderWidth.Value + 1));

  void OnPreviousButtonClick(object sender, WizardNavigationEventArgs e)
    // When the Previous button is clicked, decrease the 
    // Wizard1.BorderWidth by 1.
    Wizard1.BorderWidth = Unit.Pixel((int)(Wizard1.BorderWidth.Value - 1));


<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
    <form id="form1" runat="server">
      <asp:Wizard id="Wizard1" 
          <asp:WizardStep id="WizardStep1" 
            title="Step 1">
          <asp:WizardStep id="WizardStep2" 
            title="Step 2">
          <asp:WizardStep id="WizardStep3" 
            title="Step 3">
          <asp:WizardStep id="WizardStep4" 
            title="Step 4">
          <asp:WizardStep id="WizardStep5" 
            title="Step 5">
          <asp:WizardStep id="WizardStep6" 
            title="Step 6">
          <asp:WizardStep id="WizardStep7" 
            title="Step 7">
          <b>NextButtonClick and PreviousButtonClick Example</b>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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