DropDown控件,该控件用于实现下拉列表控件的客户端功能。 
  
实例代码如下:
  
    
       <%
      
      
      
        
          @PageLanguage
        
        
          =
        
        
          "
        
        
          C#
        
        
          "
        
        
          AutoEventWireup
        
        
          =
        
        
          "
        
        
          true
        
        
          "
        
        
          CodeFile
        
        
          =
        
        
          "
        
        
          DragPanelDemo.aspx.cs
        
        
          "
      
      
        <%
      
      
      
        
          @PageLanguage
        
        
          =
        
        
          "
        
        
          C#
        
        
          "
        
        
          AutoEventWireup
        
        
          =
        
        
          "
        
        
          true
        
        
          "
        
        
          CodeFile
        
        
          =
        
        
          "
        
        
          DragPanelDemo.aspx.cs
        
        
          "
        
        
          
Inherits = " DragPanelDemo " %>
         
        
         <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          System.Web.Extensions,Version=1.0.61025.0,Culture=neutral,
        
      
      
        <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          System.Web.Extensions,Version=1.0.61025.0,Culture=neutral, 
          
PublicKeyToken=31bf3856ad364e35 "
           Namespace
        
        
          =
        
        
          "
        
        
          System.Web.UI
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          asp
        
        
          "
        
        
        
      
      
        %>
          Namespace
        
        
          =
        
        
          "
        
        
          System.Web.UI
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          asp
        
        
          "
        
        
        
      
      
        %>
      
      
        
         
        
         <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          Namespace
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          cc1
        
        
          "
        
        
        
      
      
        %>
        
      
      
        <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          Namespace
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          cc1
        
        
          "
        
        
        
      
      
        %>
      
      
        
         
        
         <!
      
      
        DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
      
      
        <!
      
      
        DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN" 
        
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
         
        
         <
      
      
        html
      
      
        xmlns
      
      
        ="http://www.w3.org/1999/xhtml"
      
      
      
      
        >
      
      
        <
      
      
        html
      
      
        xmlns
      
      
        ="http://www.w3.org/1999/xhtml"
      
      
      
      
        >
      
      
        
         <
      
      
        head
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        head
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        
         <
      
      
        title
      
      
        >
      
      
        无标题页
      
      
        </
      
      
        title
      
      
        >
      
      
        <
      
      
        title
      
      
        >
      
      
        无标题页
      
      
        </
      
      
        title
      
      
        >
      
      
        
         </
      
      
        head
      
      
        >
      
      
        </
      
      
        head
      
      
        >
      
      
        
         <
      
      
        body
      
      
        >
      
      
        <
      
      
        body
      
      
        >
      
      
        
         <
      
      
        form
      
      
        id
      
      
        ="form1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        form
      
      
        id
      
      
        ="form1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        
         <
      
      
        div
      
      
        >
      
      
        <
      
      
        div
      
      
        >
      
      
        
         <
      
      
        asp:ScriptManager
      
      
        ID
      
      
        ="ScriptManager1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        asp:ScriptManager
      
      
        ID
      
      
        ="ScriptManager1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        
         </
      
      
        asp:ScriptManager
      
      
        >
      
      
        </
      
      
        asp:ScriptManager
      
      
        >
      
      
        
         <
      
      
        div
      
      
        style
      
      
        ="height:300px;width:150px;float:left;padding:5px;"
      
      
        >
      
      
        <
      
      
        div
      
      
        style
      
      
        ="height:300px;width:150px;float:left;padding:5px;"
      
      
        >
      
      
        
         <
      
      
        asp:Panel
      
      
        ID
      
      
        ="Panel3"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        >
      
      
        <
      
      
        asp:Panel
      
      
        ID
      
      
        ="Panel3"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        >
      
      
        
         <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel4"
      
      
        <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel4"
      
      
        
         runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        Height
      
      
        ="20px"
      
      
        >
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        Height
      
      
        ="20px"
      
      
        >
      
      
        
         <
      
      
        div
      
      
        class
      
      
        ="dragMe"
      
      
        >
      
      
        <
      
      
        div
      
      
        class
      
      
        ="dragMe"
      
      
        >
      
      
        
         拖动
      
      
        </
      
      
        div
      
      
        >
        拖动
      
      
        </
      
      
        div
      
      
        >
      
      
        
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
        
         <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BackColor
      
      
        ="#AFC5FE"
      
      
        ForeColor
      
      
        ="Black"
      
      
        Font-Size
      
      
        ="small"
      
      
        <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BackColor
      
      
        ="#AFC5FE"
      
      
        ForeColor
      
      
        ="Black"
      
      
        Font-Size
      
      
        ="small"
      
      
        
         BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel5"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel5"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        
         Height
      
      
        ="150px"
      
      
        Style
      
      
        ="overflow:scroll;"
      
      
        >
        Height
      
      
        ="150px"
      
      
        Style
      
      
        ="overflow:scroll;"
      
      
        >
      
      
        
         <
      
      
        p
      
      
        >
      
      
        移动控制板
      
      
        </
      
      
        p
      
      
        >
      
      
        <
      
      
        p
      
      
        >
      
      
        移动控制板
      
      
        </
      
      
        p
      
      
        >
      
      
        
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
        
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
        
         <
      
      
        cc1:DragPanelExtender
      
      
        ID
      
      
        ="DragPanelExtender1"
      
      
        runat
      
      
        ="server"
      
      
        <
      
      
        cc1:DragPanelExtender
      
      
        ID
      
      
        ="DragPanelExtender1"
      
      
        runat
      
      
        ="server"
      
      
        
TargetControlID ="Panel3" DragHandleID ="Panel4" >
         </
      
      
        cc1:DragPanelExtender
      
      
        >
      
      
        </
      
      
        cc1:DragPanelExtender
      
      
        >
      
      
        
         </
      
      
        div
      
      
        >
      
      
        </
      
      
        div
      
      
        >
      
      
        
         </
      
      
        div
      
      
        >
      
      
        </
      
      
        div
      
      
        >
      
      
        
         </
      
      
        form
      
      
        >
      
      
        </
      
      
        form
      
      
        >
      
      
        
         </
      
      
        body
      
      
        >
      
      
        </
      
      
        body
      
      
        >
      
      
        
         </
      
      
        html
      
      
        >
      
      
        </
      
      
        html
      
      
        >
      
      
        
         
      
    
  
  
 实例代码如下:
 <%
      
      
      
        
          @PageLanguage
        
        
          =
        
        
          "
        
        
          C#
        
        
          "
        
        
          AutoEventWireup
        
        
          =
        
        
          "
        
        
          true
        
        
          "
        
        
          CodeFile
        
        
          =
        
        
          "
        
        
          DragPanelDemo.aspx.cs
        
        
          "
      
      
        <%
      
      
      
        
          @PageLanguage
        
        
          =
        
        
          "
        
        
          C#
        
        
          "
        
        
          AutoEventWireup
        
        
          =
        
        
          "
        
        
          true
        
        
          "
        
        
          CodeFile
        
        
          =
        
        
          "
        
        
          DragPanelDemo.aspx.cs
        
        
          "
        
        
          Inherits = " DragPanelDemo " %>
 
         <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          System.Web.Extensions,Version=1.0.61025.0,Culture=neutral,
        
      
      
        <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          System.Web.Extensions,Version=1.0.61025.0,Culture=neutral, 
          PublicKeyToken=31bf3856ad364e35 "
 Namespace
        
        
          =
        
        
          "
        
        
          System.Web.UI
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          asp
        
        
          "
        
        
        
      
      
        %>
          Namespace
        
        
          =
        
        
          "
        
        
          System.Web.UI
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          asp
        
        
          "
        
        
        
      
      
        %>
      
      
         
         <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          Namespace
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          cc1
        
        
          "
        
        
        
      
      
        %>
        
      
      
        <%
      
      
      
        
          @RegisterAssembly
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          Namespace
        
        
          =
        
        
          "
        
        
          AjaxControlToolkit
        
        
          "
        
        
          TagPrefix
        
        
          =
        
        
          "
        
        
          cc1
        
        
          "
        
        
        
      
      
        %>
      
      
         
         <!
      
      
        DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
      
      
        <!
      
      
        DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN" 
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
 
         <
      
      
        html
      
      
        xmlns
      
      
        ="http://www.w3.org/1999/xhtml"
      
      
      
      
        >
      
      
        <
      
      
        html
      
      
        xmlns
      
      
        ="http://www.w3.org/1999/xhtml"
      
      
      
      
        >
      
      
         <
      
      
        head
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        head
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
         <
      
      
        title
      
      
        >
      
      
        无标题页
      
      
        </
      
      
        title
      
      
        >
      
      
        <
      
      
        title
      
      
        >
      
      
        无标题页
      
      
        </
      
      
        title
      
      
        >
      
      
         </
      
      
        head
      
      
        >
      
      
        </
      
      
        head
      
      
        >
      
      
         <
      
      
        body
      
      
        >
      
      
        <
      
      
        body
      
      
        >
      
      
         <
      
      
        form
      
      
        id
      
      
        ="form1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        form
      
      
        id
      
      
        ="form1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
         <
      
      
        div
      
      
        >
      
      
        <
      
      
        div
      
      
        >
      
      
         <
      
      
        asp:ScriptManager
      
      
        ID
      
      
        ="ScriptManager1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
        <
      
      
        asp:ScriptManager
      
      
        ID
      
      
        ="ScriptManager1"
      
      
        runat
      
      
        ="server"
      
      
        >
      
      
         </
      
      
        asp:ScriptManager
      
      
        >
      
      
        </
      
      
        asp:ScriptManager
      
      
        >
      
      
         <
      
      
        div
      
      
        style
      
      
        ="height:300px;width:150px;float:left;padding:5px;"
      
      
        >
      
      
        <
      
      
        div
      
      
        style
      
      
        ="height:300px;width:150px;float:left;padding:5px;"
      
      
        >
      
      
         <
      
      
        asp:Panel
      
      
        ID
      
      
        ="Panel3"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        >
      
      
        <
      
      
        asp:Panel
      
      
        ID
      
      
        ="Panel3"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        >
      
      
         <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel4"
      
      
        <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel4"
      
      
         runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        Height
      
      
        ="20px"
      
      
        >
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
        Height
      
      
        ="20px"
      
      
        >
      
      
         <
      
      
        div
      
      
        class
      
      
        ="dragMe"
      
      
        >
      
      
        <
      
      
        div
      
      
        class
      
      
        ="dragMe"
      
      
        >
      
      
         拖动
      
      
        </
      
      
        div
      
      
        >
        拖动
      
      
        </
      
      
        div
      
      
        >
      
      
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
         <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BackColor
      
      
        ="#AFC5FE"
      
      
        ForeColor
      
      
        ="Black"
      
      
        Font-Size
      
      
        ="small"
      
      
        <
      
      
        asp:Panel
      
      
        BorderStyle
      
      
        ="Solid"
      
      
        BackColor
      
      
        ="#AFC5FE"
      
      
        ForeColor
      
      
        ="Black"
      
      
        Font-Size
      
      
        ="small"
      
      
         BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel5"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
        BorderWidth
      
      
        ="2px"
      
      
        BorderColor
      
      
        ="black"
      
      
        ID
      
      
        ="Panel5"
      
      
        runat
      
      
        ="server"
      
      
        Width
      
      
        ="100%"
      
      
         Height
      
      
        ="150px"
      
      
        Style
      
      
        ="overflow:scroll;"
      
      
        >
        Height
      
      
        ="150px"
      
      
        Style
      
      
        ="overflow:scroll;"
      
      
        >
      
      
         <
      
      
        p
      
      
        >
      
      
        移动控制板
      
      
        </
      
      
        p
      
      
        >
      
      
        <
      
      
        p
      
      
        >
      
      
        移动控制板
      
      
        </
      
      
        p
      
      
        >
      
      
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
         </
      
      
        asp:Panel
      
      
        >
      
      
        </
      
      
        asp:Panel
      
      
        >
      
      
         <
      
      
        cc1:DragPanelExtender
      
      
        ID
      
      
        ="DragPanelExtender1"
      
      
        runat
      
      
        ="server"
      
      
        <
      
      
        cc1:DragPanelExtender
      
      
        ID
      
      
        ="DragPanelExtender1"
      
      
        runat
      
      
        ="server"
      
      
        TargetControlID ="Panel3" DragHandleID ="Panel4" >
 </
      
      
        cc1:DragPanelExtender
      
      
        >
      
      
        </
      
      
        cc1:DragPanelExtender
      
      
        >
      
      
         </
      
      
        div
      
      
        >
      
      
        </
      
      
        div
      
      
        >
      
      
         </
      
      
        div
      
      
        >
      
      
        </
      
      
        div
      
      
        >
      
      
         </
      
      
        form
      
      
        >
      
      
        </
      
      
        form
      
      
        >
      
      
         </
      
      
        body
      
      
        >
      
      
        </
      
      
        body
      
      
        >
      
      
         </
      
      
        html
      
      
        >
      
      
        </
      
      
        html
      
      
        >
      
      
         
      
    


 
       
					 
					