我在文本框上有一个自动填充扩展器,它将记录显示为数据库中的列表,但是我点击了texbox并开始输入任何内容.我的HTML代码是

Enabled="True" TargetControlID="TextBox1" ServicePath="~/WebService.asmx"

ServiceMethod="GetCompletionList"

MinimumPrefixLength="2"

CompletionInterval="1000"

EnableCaching="true"

CompletionSetCount="20"

DelimiterCharacters=";, :"

ShowOnlyCurrentWordInCompletionListItem="true" >

我的网络服务是

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Services;

using System.Data;

using MySql.Data.MySqlClient;

using System.Configuration;

///

/// Summary description for WebService

///

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

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.

// [System.Web.Script.Services.ScriptService]

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

public WebService () {

//Uncomment the following line if using designed components

//InitializeComponent();

}

[WebMethod]

public static List GetCompletionList(string prefixText, int count)

{

MySqlConnection con = new MySqlConnection(ConfigurationManager.AppSettings["cn"]);

if (con.State == ConnectionState.Closed)

con.Open();

MySqlCommand cmd = new MySqlCommand("SELECT gotra FROM tbgotra WHERE gotra LIKE '%" + prefixText + "%'",con);

List k = new List();

using (MySqlDataReader sdr = cmd.ExecuteReader())

{

while (sdr.Read())

{

k.Add(sdr["gotra"].ToString());

}

}

con.Close();

return k;

}

}