ajax扩展控件(8)

<% ... @PageLanguage = " C# " AutoEventWireup = " true " CodeFile = " TextboxWatermarkDemo.aspx.cs "
Inherits = " TextboxWatermarkDemo " %>

<% ... @RegisterAssembly = " System.Web.Extensions,Version=1.0.61025.0,Culture=neutral,
PublicKeyToken=31bf3856ad364e35 "
Namespace = " System.Web.UI " TagPrefix = " asp " %>

<% ... @RegisterAssembly = " AjaxControlToolkit " Namespace = " AjaxControlToolkit " TagPrefix = " cc1 " %>

<! DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

< html xmlns ="http://www.w3.org/1999/xhtml" >
< head runat ="server" >
< title > 无标题页 </ title >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >

< asp:ScriptManager ID ="ScriptManager1" runat ="server" >
</ asp:ScriptManager >


< asp:UpdatePanel ID ="UpdatePanel1" runat ="server" >
< ContentTemplate >

用户名:
< asp:TextBox ID ="TextBox1" CssClass ="unwatermarked" Width ="150" runat ="server" >
</ asp:TextBox >
< cc1:TextBoxWatermarkExtender ID ="TextBoxWatermarkExtender1" runat ="server"
TargetControlID ="TextBox1" WatermarkText ="请输入用户名" />
< br />
密码: &nbsp; &nbsp;
< asp:TextBox ID ="TextBox2" CssClass ="unwatermarked" Width ="150" runat ="server" >
</ asp:TextBox >
< cc1:TextBoxWatermarkExtender ID ="TextBoxWatermarkExtender2" runat ="server"
TargetControlID ="TextBox2" WatermarkText ="请输入密码" />
< br />
< br />

</ ContentTemplate >
</ asp:UpdatePanel >
</ div >
</ form >
</ body >
</ html >