8.DropDown
   功能：什么都可以以下拉菜单的形式弹出来
   细节： (1)TargetControlID要在什么控件上实现扩展
                (2)DropDownControlID弹出来什么

 代码示意：
  <asp:Panel ID="DropPanel" runat="server" CssClass="ContextMenuPanel" Style="display: none;
            visibility: hidden;">
             <asp:LinkButton runat="server" ID="Option1" Text="Option 1" CssClass="ContextMenuItem"
                OnClick="OnSelect" />
            <asp:LinkButton runat="server" ID="Option2" Text="Option 2" CssClass="ContextMenuItem"
                OnClick="OnSelect" />
            <asp:LinkButton runat="server" ID="Option3" Text="Option 3 (Click Me!)" CssClass="ContextMenuItem"
                OnClick="OnSelect" />
        </asp:Panel>
        <cc1:DropDownExtender runat="server" ID="DDE" TargetControlID="TextLabel"
            DropDownControlID="DropPanel" />

9.DropShadow
   功能：阴影效果，其实可以放给美工实现
   细节： (1)Width 单位：px  默认5px
                (2)Opacity  不透明度0-1.0 默认.5

  代码示意：
    <ajaxToolkit:DropShadowExtender ID="dse" runat="server"
        TargetControlID="Panel1"
        Opacity=".8"
        Rounded="true"
        TrackPosition="true" />
10.DynamicPopulate
   功能：能实用Web Service或页面方法来替换控件的内容
   细节： (1)ClearContentsDuringUpdate  替换之前先清除以前的内容（默认True）
                (2)PopulateTriggerControlID 触发器绑定的控件 单击时触发
                (3)ContextKey传递给Web Service的随机字符串
                (4) Web Service方法签名必须符合下面的形式：
                [WebMethod]
                string DynamicPopulateMethod(string contextKey)
                {...}
                Note you can replace "DynamicPopulateMethod" with a naming of your choice, but the return
                type and parameter name and type must exactly match, including case.

代码示意：
<ajaxToolkit:DynamicPopulateExtender ID="dp" runat="server"
    TargetControlID="Panel1"
    ClearContentsDuringUpdate="true"
    PopulateTriggerControlID="Label1"
    ServiceMethod="GetHtml"
    UpdatingCssClass="dynamicPopulate_Updating" />
             
11.FilteredTextBox
   功能：文本框数据过滤
   细节： (1)过滤条件Numbers LowercaseLetters UppercaseLetters   Custom
                (2)过滤条件也可以是Custom的组合 FilterType="Custom, Numbers"
                (3)ValidChars="+-=/*()." Custom要定义这样的有效字符串
                (4) 其实这是个鸡肋：你可以输入中文，聊胜于无，忍了

示意代码：
<ajaxToolkit:FilteredTextBoxExtender ID="ftbe" runat="server"
        TargetControlID="TextBox3"        
        FilterType="Custom, Numbers"
        ValidChars="+-=/*()." />
12.HoverMenu
   功能：鼠标靠近时显示菜单，可以用在在线数据修改的表格上作为功能菜单
   细节： (1)PopupControlID要弹出来什么
                (2)PopupPostion 在哪里弹出来Left (Default), Right, Top, Bottom, Center.
                (3)OffsetX/OffsetY 弹出项与源控件的距离
                (4) PopDelay 弹出延时显示 单位milliseconds. Default is 100.

代码示意：
<ajaxToolkit:HoverMenuExtender ID="hme2" runat="Server"
    TargetControlID="Panel9"
    HoverCssClass="popupHover"
    PopupControlID="PopupMenu"
    PopupPosition="Left"
    OffsetX="0"
    OffsetY="0"
    PopDelay="50" />
13.ModalPopup
   功能：Xp的关机效果，后面全部灰掉，很多邮箱的删除对话框都着种效果
   细节： (1)本质上讲这是一个对话框模版，比ConfirmButton有意义有更强的扩展性！
                (2)从下面的代码中我们发现 点OK的时候可以调用后台方法
                (3)同时可以执行一段脚本

代码示意：
  <asp:Panel ID="Panel2" runat="server" CssClass="modalPopup" style="display:none">
        <p>
            <asp:Label ID="Label1" runat="server" BackColor="Blue" ForeColor="White" Style="position: relative"
                Text="信息提示"></asp:Label>&nbsp;</p>
        <p >确定要删除当前下载的任务么？</p>
        <p style="text-align:center;">
        <asp:Button ID="Button1" runat="server" Text="OK" ></asp:Button>
        <asp:Button ID="Button2" runat="server" Text="Cancel"></asp:Button>
        </p>
    </asp:Panel>
    <ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender" runat="server" TargetControlID="LinkButton1"
    PopupControlID="Panel2" BackgroundCssClass="modalBackground" DropShadow="true"
    OkControlID="Button1" OnOkScript="onOk()" CancelControlID="CancelButton" />
14.MutuallyExlcusiveCheckBox
   功能：互斥复选框就像Radio一样
   细节： (1)Key属性用来分组就像RdiolistGroup一样
                (2)argetControlID用来绑定已有的CheckBox

   代码示意：
               <ajaxToolkit:MutuallyExclusiveCheckboxExtender runat="server"
    ID="MustHaveGuestBedroomCheckBoxEx"
    TargetControlID="MustHaveGuestBedroomCheckBox"
    Key="GuestBedroomCheckBoxes" />
15.NoBot
   功能：Captcha 图灵测试 反垃圾信息控件
   细节： (1)OnGenerateChallengeAndResponse 这个属性是EventHandler<NoBotEventArgs> 调用服务器端的方法，注意方法签名
                       例如：   protected void CustomChallengeResponse(object sender, NoBotEventArgs e) {……}

 代码示意：
    <ajaxToolkit:NoBot
  ID="NoBot2"
  runat="server"
  OnGenerateChallengeAndResponse="CustomChallengeResponse"
  ResponseMinimumDelaySeconds="2"
  CutoffWindowSeconds="60"
  CutoffMaximumInstances="5" />
16.NumericUpDown
   功能：实现Winform里面的Updown
   细节： (1)普通整数增减
                (2)值列表循环显示比如下面的第二个例子RefValues
                (3)调用Web Service的格式：
               
<ajaxToolkit:NumericUpDownExtender ID="NUD1" runat="server"
    TargetControlID="TextBox1"
    Width="100"
    RefValues="January;February;March;April"
    TargetButtonDownID="Button1"
    TargetButtonUpID="Button2"
    ServiceDownPath="WebService1.asmx"
    ServiceDownMethod="PrevValue"
    ServiceUpPath="WebService1.asmx"
    ServiceUpMethod="NextValue"
    Tag="1" />
代码示意：
           <ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender1" runat="server"
                    TargetControlID="TextBox1" Width="120" RefValues=""
                    ServiceDownMethod="" ServiceUpMethod="" TargetButtonDownID="" TargetButtonUpID="" />
                <ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender2" runat="server"
                    TargetControlID="TextBox2" Width="120" RefValues="January;February;March;April;May;June;July;August;September;October;November;December"
                    ServiceDownMethod="" ServiceUpMethod="" TargetButtonDownID="" TargetButtonUpID="" />
                       <ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender4" runat="server"
                    TargetControlID="TextBox4" Width="80" TargetButtonDownID="img1"
                    TargetButtonUpID="img2" RefValues="" ServiceDownMethod="" ServiceUpMethod="" />