AjaxControlToolkit类似Google搜索栏功能的智能匹配

1、引用组件AjaxControlToolkit.dll

 

2、Web.config中添加对该控件的引用

    <pages>

      <controls>      

        <add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" tagPrefix="ajaxToolkit"/>

      controls>

pages>

注意：如果不在这里设置，则要在aspx页面设置下面写法：

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

 3、添加服务设置文件AutoComplete.asmx

里面不需要编辑什么内容，保留自动生成的代码即可。

 

其代码文件AutoComplete.cs会放到App_Code文件夹下

内部代码如下：
using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Data.OleDb;
using System.Data;

///

///AutoComplete 的摘要说明
///

[WebService(Namespace = "")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释（默认是不取消的）。
[System.Web.Script.Services.ScriptService]
public class AutoComplete : System.Web.Services.WebService
{

    private string[] autoCompleteWordList;

    //下面颜色字体，除了方法名字可以改变外，其他不能变，固定写法返回字符串数组。
    [WebMethod]
    public String[] GetCompleteList(string prefixText, int count)
    {
        string[] autoCompleteWordList = null;
        if (string.IsNullOrEmpty(prefixText) || count <= 0)
        {
            return null;
        }

        if (autoCompleteWordList == null)
        {
            OleDbConnection connection =
                new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
                                    Server.MapPath("AutoComplete.mdb"));
            connection.Open();
            OleDbDataAdapter adapter =
                new OleDbDataAdapter(
                    "SELECT keyName FROM keyInfo WHERE keyName LIKE'" + prefixText + "%' ORDER BY keyName", connection);
            DataSet dataSet = new DataSet();
            adapter.Fill(dataSet);

            autoCompleteWordList = new string[dataSet.Tables[0].Rows.Count];
            int i = 0;
            foreach (DataRow dr in dataSet.Tables[0].Rows)
            {
                autoCompleteWordList[i] = dr["keyName"].ToString();
                i++;
            }
            if (connection.State == ConnectionState.Open)
                connection.Close();
        }
        return autoCompleteWordList;
    }
}

5、页面代码中调用代码

   
   
   
            TargetControlID="txtCode" ServicePath="AutoComplete.asmx" ServiceMethod="GetCompleteList"
        MinimumPrefixLength="1">
   
   

http://tzluxiantao.blog.163.com/blog/static/859928201171910421872/