请帮忙看看我的ajax自动匹配代码，为什么不行

kvkensin4 2011-05-05 05:25:26

代码：

前台：

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

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

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<!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 id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/WebService.asmx" />
</Services></asp:ScriptManager>
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" TargetControlID="TextBox1"
MinimumPrefixLength="1" EnableCaching="true" CompletionInterval="300" ServiceMethod="GetProductName" ServicePath="WebService.asmx">
</cc1:AutoCompleteExtender>
</div>
</form>
</body>
</html>

WebService.cs

using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Data;
using System.Data.SqlClient;
using System.Web.Script.Services;//关键引用
using System.Collections.Generic;//关键引用

/// <summary>
/// WebService 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService] public class WebService : System.Web.Services.WebService {

public WebService () {

//InitializeComponent();
}

[WebMethod]
[ScriptMethod]
public string[] GetProductName(string prefixText, int count)
{
List<string> suggestions=new List<string>();
SqlConnection con = new SqlConnection("server=.;database=Sun;uid=sun;pwd=123;");
con.Open();
SqlCommand com = new SqlCommand("select DicName from Picture where DicName like @prefixname order by DicName", con);
com.Parameters.Add("@prefixname",SqlDbType.NVarChar).Value=prefixText + "%";
SqlDataReader sdr = com.ExecuteReader();
while (sdr.Read())
{
suggestions.Add(sdr.GetString(0));
}
sdr.Close();
con.Close();
return suggestions.ToArray();
}
}

郁闷，为什么不行呢？而且没有错误提示，请高手帮帮忙

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子夜__ 2011-05-05

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

   

 <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>  

   

 <!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>AJAX控件之AutoComplete</title>  

 </head>  

 <body style="text-align: center">  

    <form id="form1" runat="server">  

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

         <div>  

             <asp:TextBox ID="MyAuto" runat="server" Width="191px"></asp:TextBox><br />  

             <br />  

             <cc1:AutoCompleteExtender ID="ace" runat="server" CompletionInterval="100" MinimumPrefixLength="1"  

                 ServiceMethod="GetCompletionList" ServicePath="WebService.asmx" TargetControlID="MyAuto">  

             </cc1:AutoCompleteExtender>  

              </div>  

     </form>  

</body>  

</html>

# using System;  

 using System.Web;  

 using System.Collections.Generic;  

 using System.Web.Services;  

 using System.Web.Services.Protocols;  

   

   

 /// <summary>  

 /// WebService 的摘要说明  

 /// </summary>  

 [WebService(Namespace = "http://tempuri.org/")]  

 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]  

 //用以调用Web Service方法签名  

 [System.Web.Script.Services.ScriptService]  

 public class WebService : System.Web.Services.WebService {  

   

     public WebService () {}  

   

     [WebMethod]  

     public string[] GetCompletionList(string prefixText, int count)  

     {  

         //if (count == 0)  

         //{  

         //    count = 10;  

         //}  

         Random random = new Random();  

         List<string> items = new List<string>(count);  

         for (int i = 0; i < count; i++)  

         {  

             char c1 = (char)random.Next(65,90);  

             char c2 = (char)random.Next(97, 122);  

             char c3 = (char)random.Next(48, 57);  

             char c4 = (char)random.Next(33, 43);  

             items.Add(prefixText + c1 + c2 + c3 + c4);  

         }  

         return items.ToArray();  

     }  

   

}