1 oec2003
2 oec2004
3 oec2005
4 oec2006
5 oec2007

 1using System;
 2using System.Web;
 3using System.Collections;
 4using System.Web.Services;
 5using System.Web.Services.Protocols;
 6using System.IO;
 7
 8
 9/**//// <summary>
10/// AutoComplete 的摘要说明
11/// </summary>
12[WebService(Namespace = "http://tempuri.org/")]
13[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
14[System.Web.Script.Services.ScriptService]
15public class AutoComplete : System.Web.Services.WebService {
16
17    public AutoComplete () {
18
19        //如果使用设计的组件，请取消注释以下行 
20        //InitializeComponent(); 
21    }
22
23    [WebMethod]
24    public string HelloWorld() {
25        return "Hello World";
26    }
27    /**//// <summary>
28    /// 获取数据的方法GetCompleteList
29    /// </summary>
30    //定义静态数组用于保存获取的数据
31    private static string[] autoCompleteWordList = null;
32    [WebMethod]
33    public String[] GetCompleteList(string prefixText, int count)
34    {
35        if (autoCompleteWordList == null)
36        {
37            string[] temp = File.ReadAllLines(Server.MapPath("~/App_Data/TextFile.txt"));
38            Array.Sort(temp, new CaseInsensitiveComparer());
39            autoCompleteWordList = temp;
40        }
41
42        int index = Array.BinarySearch(autoCompleteWordList, prefixText, new CaseInsensitiveComparer());
43        if (index < 0)
44        {
45            index = ~index;
46        }
47
48        int matchingCount;
49        for (matchingCount = 0; matchingCount < count && index + matchingCount < autoCompleteWordList.Length; matchingCount++)
50        {
51            if (!autoCompleteWordList[index + matchingCount].StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase))
52            {
53                break;
54            }
55        }
56        String[] returnValue = new string[matchingCount];
57        if (matchingCount > 0)
58        {
59            Array.Copy(autoCompleteWordList, index, returnValue, 0, matchingCount);
60        }
61        return returnValue;
62    }
63
64}

using System.IO;

[System.Web.Script.Services.ScriptService]

<ajaxToolkit:AutoCompleteExtender 
            ID="AutoCompleteExtender1" 
            runat="server" 
            ServiceMethod="GetCompleteList" 
            ServicePath="oec2003_AutoComplete.asmx" 
            Enabled="true" 
            MinimumPrefixLength="2" 
               CompletionSetCount="10"
            TargetControlID="TextBox1">
</ajaxToolkit:AutoCompleteExtender>