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Wizard.OnPreviousButtonClick(WizardNavigationEventArgs) Method

  • Reference

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Raises the PreviousButtonClick event.

protected:
 virtual void OnPreviousButtonClick(System::Web::UI::WebControls::WizardNavigationEventArgs ^ e);
protected virtual void OnPreviousButtonClick (System.Web.UI.WebControls.WizardNavigationEventArgs e);
abstract member OnPreviousButtonClick : System.Web.UI.WebControls.WizardNavigationEventArgs -> unit
override this.OnPreviousButtonClick : System.Web.UI.WebControls.WizardNavigationEventArgs -> unit
Protected Overridable Sub OnPreviousButtonClick (e As WizardNavigationEventArgs)

Parameters

e
WizardNavigationEventArgs

A WizardNavigationEventArgs containing event data.

Examples

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));
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:Wizard id="Wizard1" 
        runat="server" 
        onnextbuttonclick="OnNextButtonClick" 
        onpreviousbuttonclick="OnPreviousButtonClick"
        borderstyle="Solid"
        bordercolor="#3300ff"
        borderwidth="1">
        <WizardSteps>
          <asp:WizardStep id="WizardStep1" 
            runat="server" 
            title="Step 1">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep2" 
            runat="server" 
            title="Step 2">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep3" 
            runat="server" 
            title="Step 3">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep4" 
            runat="server" 
            title="Step 4">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep5" 
            runat="server" 
            title="Step 5">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep6" 
            runat="server" 
            title="Step 6">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep7" 
            runat="server" 
            title="Step 7">
          </asp:WizardStep>
        </WizardSteps>
        <HeaderTemplate>
          <b>NextButtonClick and PreviousButtonClick Example</b>
        </HeaderTemplate>
      </asp:Wizard>
    </form>
  </body>
</html>

<%@ Page Language="VB" %>

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

<script runat="server">

  Sub OnNextButtonClick(ByVal sender As Object, ByVal e As WizardNavigationEventArgs)
    ' When the Next button is clicked, increase the 
    ' Wizard1.BorderWidth by 1.
    Wizard1.BorderWidth = Unit.Pixel(CInt(Wizard1.BorderWidth.Value + 1))
  End Sub
  
  Sub OnPreviousButtonClick(ByVal sender As Object, ByVal e As WizardNavigationEventArgs)
    ' When the Previous button is clicked, decrease the 
    ' Wizard1.BorderWidth by 1.
    Wizard1.BorderWidth = Unit.Pixel(CInt(Wizard1.BorderWidth.Value - 1))
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <asp:Wizard id="Wizard1" 
        runat="server" 
        onnextbuttonclick="OnNextButtonClick" 
        onpreviousbuttonclick="OnPreviousButtonClick"
        borderstyle="Solid" 
        bordercolor="#3300ff"
        borderwidth="1">
        <WizardSteps>
          <asp:WizardStep id="WizardStep1" 
            runat="server" 
            title="Step 1">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep2" 
            runat="server" 
            title="Step 2">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep3" 
            runat="server" 
            title="Step 3">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep4" 
            runat="server" 
            title="Step 4">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep5" 
            runat="server" 
            title="Step 5">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep6" 
            runat="server" 
            title="Step 6">
          </asp:WizardStep>
          <asp:WizardStep id="WizardStep7" 
            runat="server" 
            title="Step 7">
          </asp:WizardStep>
        </WizardSteps>
        <HeaderTemplate>
          <b>NextButtonClick and PreviousButtonClick Example</b>
        </HeaderTemplate>
      </asp:Wizard>
    </form>
  </body>
</html>

Remarks

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 Handling and Raising Events.

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

Applies to

See also