AutoCompleteExtender

这是一个webservices，在aspx中调用就行了！

using System;

using System.IO;

using System.Web;

using System.Collections;

using System.Collections.Generic;

using System.Threading;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.Xml.Serialization;



/// <summary>

/// Summary description for AutoCompleteService

/// </summary>

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

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[System.Web.Script.Services.ScriptService]

public class AutoCompleteService : System.Web.Services.WebService

{

public AutoCompleteService()

{

//Uncomment the following line if using designed components

        //InitializeComponent();

    }



private static string[] autoCompleteWordList = null;



[WebMethod]

//******光之翼 QQ272912705     www.hi.baidu.com/jcomet*******

public String[] GetWordList(string prefixText, int count)

{

if (autoCompleteWordList == null)

{

string[] temp = File.ReadAllLines(Server.MapPath("~/App_Data/words.txt"));

Array.Sort(temp, new CaseInsensitiveComparer());

autoCompleteWordList = temp;

}



int index = Array.BinarySearch(autoCompleteWordList, prefixText,

new CaseInsensitiveComparer());



if (index < 0)

{

index = ~index;

}



int matchingCount;

for (matchingCount = 0;

matchingCount < count && index + matchingCount < autoCompleteWordList.Length;

matchingCount++)

{

if (!autoCompleteWordList[index + matchingCount].StartsWith(prefixText,

StringComparison.CurrentCultureIgnoreCase))

{

break;

}

}



String[] returnValue = new string[matchingCount];



if (matchingCount > 0)

{

Array.Copy(autoCompleteWordList, index, returnValue, 0, matchingCount);

}



return returnValue;

}

}