MultiView.OnActiveViewChanged(EventArgs) Metode
Definisi
Penting
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Menaikkan ActiveViewChanged peristiwa MultiView kontrol.
protected:
virtual void OnActiveViewChanged(EventArgs ^ e);protected virtual void OnActiveViewChanged (EventArgs e);abstract member OnActiveViewChanged : EventArgs -> unit
override this.OnActiveViewChanged : EventArgs -> unitProtected Overridable Sub OnActiveViewChanged (e As EventArgs)Parameter
Contoh
Contoh berikut menunjukkan cara menentukan dan mengodekan penanganan aktivitas untuk ActiveViewChanged peristiwa MultiView kontrol. Saat tampilan aktif berubah, pesan ditampilkan dalam Label kontrol pada halaman.
Catatan
Sampel kode berikut menggunakan model kode file tunggal dan mungkin tidak berfungsi dengan benar jika disalin langsung ke file code-behind. Sampel kode ini harus disalin ke dalam file teks kosong yang memiliki ekstensi .aspx. Untuk informasi selengkapnya tentang model kode Formulir Web, lihat ASP.NET Model Kode Halaman Formulir Web.
<%@ 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">
protected void MultiView1_ActiveViewChanged(object sender, EventArgs e)
{
String activeView;
activeView = MultiView1.GetActiveView().ID;
ActiveViewLabel.Text = "The ActiveViewChanged event was raised." +
"<br/>" + "The active view is set to " + activeView;
}
protected void LinkButton_Command(object sender, CommandEventArgs e)
{
// Determine which link button was clicked
// and set the active view to
// the view selected by the user.
switch (e.CommandArgument.ToString())
{
case "DefaultView":
MultiView1.SetActiveView(DefaultView);
break;
case "News":
MultiView1.SetActiveView(NewsView);
break;
case "Shopping":
MultiView1.SetActiveView(ShoppingView);
break;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>MultiView.ActiveViewChangedEvent Example</h3>
<asp:MultiView id="MultiView1"
ActiveViewIndex="0"
OnActiveViewChanged="MultiView1_ActiveViewChanged"
runat="Server">
<asp:View id="DefaultView"
runat="Server">
<asp:Panel id="DefaultViewPanel"
Width="330px"
BackColor="#C0C0FF"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="DefaultLabel1"
Font-bold="true"
Font-size="14"
Text="The Default View"
runat="Server"
AssociatedControlID="DefaultView">
</asp:Label>
<asp:BulletedList id="DefaultBulletedList1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem
Value="http://www.microsoft.com">Today's Weather</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's Stock Quotes</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's News Headlines</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's Featured Shopping</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="DefaultLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="Default_NewsLink"
Text="Go to News View"
OnCommand="LinkButton_Command"
CommandArgument="News"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="Default_ShoppingLink"
Text="Go to Shopping View"
OnCommand="LinkButton_Command"
CommandArgument="Shopping"
CommandName="Link"
Width="150px"
runat="server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
<asp:View id="NewsView"
runat="Server">
<asp:Panel id="NewsPanel1"
Width="330px"
BackColor="#C0FFC0"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="NewsLabel1"
Font-bold="true"
Font-size="14"
Text="The News View"
runat="Server"
AssociatedControlID="NewsView">
</asp:Label>
<asp:BulletedList id="NewsBulletedlist1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem Value="http://www.microsoft.com">Today's International Headlines</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Today's National Headlines</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Today's Local News</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="NewsLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="News_DefaultLink"
Text="Go to the Default View"
OnCommand="LinkButton_Command"
CommandArgument="DefaultView"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="News_ShoppingLink"
Text="Go to Shopping View"
OnCommand="LinkButton_Command"
CommandArgument="Shopping"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
<asp:View id="ShoppingView"
runat="Server">
<asp:Panel id="ShoppingPanel1"
Width="330px"
BackColor="#FFFFC0"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="ShoppingLabel1"
Font-Bold="true"
Font-size="14"
Text="The Shopping View"
runat="Server"
AssociatedControlID="ShoppingView">
</asp:Label>
<asp:BulletedList id="ShoppingBulletedlist1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem Value="http://www.microsoft.com">Shop for Home and Garden </asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Shop for Women's Fashions</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Shop for Men's Fashions</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="ShoppingLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="Shopping_DefaultLink"
Text="Go to the Default View"
OnCommand="LinkButton_Command"
CommandArgument="DefaultView"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="Shopping_NewsLink"
Text="Go to News View"
OnCommand="LinkButton_Command"
CommandArgument="News"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
</asp:MultiView>
<hr />
<asp:Label id="ActiveViewLabel"
BorderStyle="None"
Font-Size="Small"
BackColor="#ffff66"
runat="Server" >
</asp:Label>
</div>
</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 MultiView1_ActiveViewChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Dim activeView As String
activeView = MultiView1.GetActiveView().ID
ActiveViewLabel.Text = "The ActiveViewChanged event was raised." + _
"<br/>" + "The active view is set to " + activeView
End Sub
Sub LinkButton_Command(ByVal sender As Object, ByVal e As CommandEventArgs)
' Determine which link button was clicked
' and set the active view to
' the view selected by the user.
Select Case (e.CommandArgument.ToString())
Case "DefaultView"
MultiView1.SetActiveView(DefaultView)
Case "News"
MultiView1.SetActiveView(NewsView)
Case "Shopping"
MultiView1.SetActiveView(ShoppingView)
End Select
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>MultiView.ActiveViewChangedEvent Example</h3>
<asp:MultiView id="MultiView1"
ActiveViewIndex="0"
OnActiveViewChanged="MultiView1_ActiveViewChanged"
runat="Server">
<asp:View id="DefaultView"
runat="Server">
<asp:Panel id="DefaultViewPanel"
Width="330px"
BackColor="#C0C0FF"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="DefaultLabel1"
Font-bold="true"
Font-size="14"
Text="The Default View"
runat="Server"
AssociatedControlID="DefaultView">
</asp:Label>
<asp:BulletedList id="DefaultBulletedList1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem
Value="http://www.microsoft.com">Today's Weather</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's Stock Quotes</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's News Headlines</asp:ListItem>
<asp:ListItem
Value="http://www.microsoft.com">Today's Featured Shopping</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="DefaultLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="Default_NewsLink"
Text="Go to News View"
OnCommand="LinkButton_Command"
CommandArgument="News"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="Default_ShoppingLink"
Text="Go to Shopping View"
OnCommand="LinkButton_Command"
CommandArgument="Shopping"
CommandName="Link"
Width="150px"
runat="server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
<asp:View id="NewsView"
runat="Server">
<asp:Panel id="NewsPanel1"
Width="330px"
BackColor="#C0FFC0"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="NewsLabel1"
Font-bold="true"
Font-size="14"
Text="The News View"
runat="Server"
AssociatedControlID="NewsView">
</asp:Label>
<asp:BulletedList id="NewsBulletedlist1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem Value="http://www.microsoft.com">Today's International Headlines</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Today's National Headlines</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Today's Local News</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="NewsLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="News_DefaultLink"
Text="Go to the Default View"
OnCommand="LinkButton_Command"
CommandArgument="DefaultView"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="News_ShoppingLink"
Text="Go to Shopping View"
OnCommand="LinkButton_Command"
CommandArgument="Shopping"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
<asp:View id="ShoppingView"
runat="Server">
<asp:Panel id="ShoppingPanel1"
Width="330px"
BackColor="#FFFFC0"
BorderColor="#404040"
BorderStyle="Double"
runat="Server">
<asp:Label id="ShoppingLabel1"
Font-Bold="true"
Font-size="14"
Text="The Shopping View"
runat="Server"
AssociatedControlID="ShoppingView">
</asp:Label>
<asp:BulletedList id="ShoppingBulletedlist1"
BulletStyle="Disc"
DisplayMode="Hyperlink"
Target="_blank"
runat="Server">
<asp:ListItem Value="http://www.microsoft.com">Shop for Home and Garden </asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Shop for Women's Fashions</asp:ListItem>
<asp:ListItem Value="http://www.microsoft.com">Shop for Men's Fashions</asp:ListItem>
</asp:BulletedList>
<hr />
<asp:Label id="ShoppingLabel2"
Font-size="12"
Text="Click a link to display a different view:"
runat="Server">
</asp:Label><br />
<asp:LinkButton id="Shopping_DefaultLink"
Text="Go to the Default View"
OnCommand="LinkButton_Command"
CommandArgument="DefaultView"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton>
<asp:LinkButton id="Shopping_NewsLink"
Text="Go to News View"
OnCommand="LinkButton_Command"
CommandArgument="News"
CommandName="Link"
Width="150px"
runat="Server">
</asp:LinkButton><br /><br />
</asp:Panel>
</asp:View>
</asp:MultiView>
<hr />
<asp:Label id="ActiveViewLabel"
BorderStyle="None"
Font-Size="Small"
BackColor="#ffff66"
runat="Server" >
</asp:Label>
</div>
</form>
</body>
</html>
Keterangan
Peristiwa ActiveViewChanged dimunculkan ketika kontrol aktif View dalam MultiView kontrol berubah antara postingan ke server, dan Anda dapat menyediakan handler kustom untuk peristiwa ini.
Menaikkan peristiwa memanggil penanganan aktivitas melalui delegasi. Untuk informasi selengkapnya, lihat Cara: Menggunakan Peristiwa dalam Aplikasi Formulir Web.
Metode ini OnActiveViewChanged 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 di kelas turunan OnActiveViewChanged(EventArgs) , pastikan untuk memanggil metode kelas OnActiveViewChanged(EventArgs) dasar sehingga delegasi terdaftar menerima peristiwa tersebut.
Berlaku untuk
Lihat juga
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