MultiView.SetActiveView(View) 方法

参考

定义

命名空间:: System.Web.UI.WebControls

程序集:: System.Web.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

将指定的 View 控件设置为 MultiView 控件的活动视图。

public:
 void SetActiveView(System::Web::UI::WebControls::View ^ view);

public void SetActiveView (System.Web.UI.WebControls.View view);

member this.SetActiveView : System.Web.UI.WebControls.View -> unit

Public Sub SetActiveView (view As View)

参数

view: View

View 控件中要设置为活动视图的 MultiView 控件。

例外

HttpException

指定的 view 参数值未包含在 MultiView 控件中。

示例

以下示例演示如何创建包含三View个MultiView控件的控件。首次加载页面时， DefaultView 使用 SetActiveView 方法将设置为活动视图。每个 View 控件都包含链接按钮，允许用户导航到不同的视图。

注意

下面的代码示例使用单文件代码模型，如果直接复制到代码隐藏文件中，可能无法正常工作。必须将此代码示例复制到扩展名为 .aspx 的空文本文件中。有关 Web 窗体代码模型的详细信息，请参阅 ASP.NET Web 窗体页代码模型。

<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>MultiView Class Example</title>
<script runat="server">

        Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
            ' The first time the page loads,
            ' render the DefaultView.
            If Not IsPostBack Then
                ' Set DefaultView as the active view.
                MultiView1.SetActiveView(DefaultView)
            End If

        End Sub

        Sub LinkButton_Command(sender As Object, e As System.Web.UI.WebControls.CommandEventArgs)
            ' Determine which link button was clicked
            ' and set the active view to
            ' the view selected by the user.
            Select Case (e.CommandArgument)
                Case "DefaultView"
                    MultiView1.SetActiveView(DefaultView)
                Case "News"
                    MultiView1.SetActiveView(NewsView)
                Case "Shopping"
                    MultiView1.SetActiveView(ShoppingView)
                Case Else
                    Throw New Exception("You did not select a valid list item.")

            End Select

        End Sub

</script>

</head>
<body>
    <form id="Form1" runat="server">
        
        <h3>MultiView Class Example</h3>

        <asp:MultiView id="MultiView1"
            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>

    </form>
</body>
</html>

注解

使用此方法将控件中的MultiView控件设置为View活动视图。一次只能将一个 View 控件定义为活动 MultiView 控件。设置为 View 活动视图的控件将呈现给客户端。 View如果控件中MultiView不存在的控件设置为活动控件，则会在运行时引发异常。 View如果未将控件设置为活动视图，则MultiView控件不会向客户端呈现任何内容。

SetActiveView使用方法以编程方式设置活动视图允许应用程序根据用户标识和首选项等条件确定View在运行时要呈现给客户端的控件。

或者，可以使用 ActiveViewIndex 属性获取或设置控件中 MultiView 当前活动视图的从零开始的索引。可以通过声明方式或编程方式访问此属性。

适用于

通过

MultiView.SetActiveView(View) 方法

定义

参数

例外

示例

注解

适用于

另请参阅

其他资源