刚开始学习AJAX,刚在ASP.NET页面里面做一个小测试，这个例子是：使用AsyncPostBackTrigger让外部控件引发局部更新
我是按照书上说的一步一步做的，但是有问题，贴出代码： Default.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %> <!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 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>
<asp:Label ID="Label1" runat="server" Text="Label"> </asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="TextBox1" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</div>
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True" OnTextChanged="TextBox1_TextChanged"> </asp:TextBox>
</form>
</body>
</html>
Default.aspx.cs using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls; public partial class test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ }
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Label1.Text = TextBox1.Text;
}
} 这应该是一个很简单的例子，当我在TextBox1中输入文本时，Label1的值没有变化，当我按Tab键时弹出对话框：
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was : 404 郁闷啊，这是怎么回事，高手来救我！
我是按照书上说的一步一步做的，但是有问题，贴出代码： Default.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %> <!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 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>
<asp:Label ID="Label1" runat="server" Text="Label"> </asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="TextBox1" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</div>
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True" OnTextChanged="TextBox1_TextChanged"> </asp:TextBox>
</form>
</body>
</html>
Default.aspx.cs using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls; public partial class test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ }
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Label1.Text = TextBox1.Text;
}
} 这应该是一个很简单的例子，当我在TextBox1中输入文本时，Label1的值没有变化，当我按Tab键时弹出对话框：
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was : 404 郁闷啊，这是怎么回事，高手来救我！
比如引用什么dLL?