Wizard.OnPreviousButtonClick(WizardNavigationEventArgs) Metode
Definisi
Penting
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Memunculkan kejadian PreviousButtonClick.
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)
Parameter
Yang WizardNavigationEventArgs berisi data peristiwa.
Contoh
Contoh kode berikut menunjukkan cara menentukan penanganan aktivitas untuk peristiwa tersebut PreviousButtonClick . Setiap kali tombol Sebelumnya diklik, BorderWidth properti untuk Wizard kontrol dikurangi 1 piksel, seperti yang diukur Unit oleh kelas.
<%@ 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>
Keterangan
Peristiwa PreviousButtonClick dimunculkan saat tombol Sebelumnya diklik.
Menaikkan peristiwa memanggil penanganan aktivitas melalui delegasi. Untuk informasi selengkapnya, lihat Menangani dan Menaikkan Peristiwa.
Metode ini OnPreviousButtonClick juga memungkinkan kelas turunan untuk menangani peristiwa tanpa melampirkan delegasi. Ini adalah teknik yang disukai untuk menangani peristiwa di kelas turunan.
Catatan Bagi Inheritor
Saat mengambil alih OnPreviousButtonClick(WizardNavigationEventArgs) metode di kelas turunan, pastikan untuk memanggil OnPreviousButtonClick(WizardNavigationEventArgs) metode kelas dasar sehingga delegasi terdaftar menerima peristiwa tersebut.