MultiView.ActiveViewChanged Událost
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
public:
event EventHandler ^ ActiveViewChanged;public event EventHandler ActiveViewChanged;member this.ActiveViewChanged : EventHandler Public Custom Event ActiveViewChanged As EventHandler Event Type
Příklady
Následující příklad ukazuje, jak určit a kód obslužné rutiny události pro ActiveViewChanged událost MultiView ovládacího prvku. Když se aktivní zobrazení změní, zobrazí se v ovládacím prvku Label na stránce zpráva.
Poznámka
Následující ukázka kódu používá model kódu s jedním souborem a nemusí správně fungovat, pokud je zkopírován přímo do souboru kódu na pozadí. Tento vzorový kód musí být zkopírován do prázdného textového souboru s příponou .aspx. Další informace o modelu kódu webových formulářů najdete v tématu ASP.NET model kódu stránky webových formulářů.
<%@ 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>
Poznámky
Událost ActiveViewChanged je vyvolána, když se aktivní View ovládací prvek v rámci MultiView ovládacího prvku změní mezi příspěvky na server.
Další informace o zpracování událostí najdete v tématu Postupy: Využití událostí v aplikaci webových formulářů.
Platí pro
Viz také
Spolupracujte s námi na GitHubu
Zdroj tohoto obsahu najdete na GitHubu, kde můžete také vytvářet a kontrolovat problémy a žádosti o přijetí změn. Další informace najdete v našem průvodci pro přispěvatele.
