AjaxControlToolkit 微软出的ajax.net 工具使用教程二十三 DropDownExtender（下拉对话框）控件的使用

Posted on 2007-05-16 16:43  ant-boss  阅读(711)  评论(0)    收藏  举报

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <div>
               <br />
            <asp:Label ID="TextLabel" runat="server" Text="Select an option." Width="303px"></asp:Label>
            <asp:Panel ID="DropPanel" runat="server" CssClass="ContextMenuPanel" Style="display :none; visibility: hidden;">
                <asp:LinkButton ID="Option1" runat="server" Text="Option 1" CssClass="ContextMenuItem" OnClick="OnSelect" />
                <asp:LinkButton ID="Option2" runat="server" Text="Option 2" CssClass="ContextMenuItem" OnClick="OnSelect" />
                <asp:LinkButton ID="Option3" runat="server" Text="Option 3 (Click Me !)" CssClass="ContextMenuItem" OnClick="OnSelect" />
            </asp:Panel>
            <ajaxToolkit:DropDownExtender ID="DDE" runat="server" TargetControlID="TextLabel" DropDownControlID="DropPanel">
            </ajaxToolkit:DropDownExtender>   
           
            <br /><br /><br />
           
            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <asp:Label ID="lblSelection" runat="server" Text=""></asp:Label>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Option1" EventName="Click" />
                <asp:AsyncPostBackTrigger ControlID="Option2" EventName="Click" />
                <asp:AsyncPostBackTrigger ControlID="Option3" EventName="Click" />
            </Triggers>
            </asp:UpdatePanel>
        </div>
    </form>   
</body>
</html>