创建数据库、表（我用的sqlserver2008数据库）

代码如下:

CREATE TABLE Ceshi
(
   id VARCHAR(50) PRIMARY KEY NOT NULL,
   cname VARCHAR(30)
)
GO
INSERT INTO Ceshi
SELECT NEWID(),'jack1' UNION
SELECT NEWID(),'jack2' UNION
SELECT NEWID(),'jack3' UNION
SELECT NEWID(),'jack4' UNION
SELECT NEWID(),'jack5' UNION
SELECT NEWID(),'peter1' UNION
SELECT NEWID(),'peter2' UNION
SELECT NEWID(),'peter3' UNION
SELECT NEWID(),'peter4' UNION
SELECT NEWID(),'peter5'
go

创建自定义函数

create function [dbo].[f_GetPy](@str nvarchar(4000))
returns nvarchar(4000)
as
begin
declare @strlen int,@re nvarchar(4000)
declare @t table(chr nchar(1) collate Chinese_PRC_CI_AS,letter nchar(1))
insert into @t(chr,letter)
select '吖 ', 'A ' union all select '八 ', 'B ' union all
   select '嚓 ', 'C ' union all select '咑 ', 'D ' union all
   select '妸 ', 'E ' union all select '发 ', 'F ' union all
   select '旮 ', 'G ' union all select '铪 ', 'H ' union all
   select '丌 ', 'J ' union all select '咔 ', 'K ' union all
   select '垃 ', 'L ' union all select '嘸 ', 'M ' union all
   select '拏 ', 'N ' union all select '噢 ', 'O ' union all
   select '妑 ', 'P ' union all select '七 ', 'Q ' union all
   select '呥 ', 'R ' union all select '仨 ', 'S ' union all
   select '他 ', 'T ' union all select '屲 ', 'W ' union all
   select '夕 ', 'X ' union all select '丫 ', 'Y ' union all
   select '帀 ', 'Z '
   select @strlen=len(@str),@re= ' '
   while @strlen> 0
   begin
     select top 1 @re=letter+@re,@strlen=@strlen-1
     from @t a where chr <=substring(@str,@strlen,1)
     order by chr desc
     if @@rowcount=0
     select @re=substring(@str,@strlen,1)+@re,@strlen=@strlen-1
   end
   return(@re)
end
GO

asp.net前台页面（需要添加2个引用：AjaxControlToolkit.dll，AutoCompleteExtra.dll）

代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TextBoxAuto.aspx.cs" Inherits="WebApplication1.TextBoxAuto" %>

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



   
   


   

后台页面

代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Oceansoft.Net.Bll;

namespace WebApplication1
{
    public partial class TextBoxAuto : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        [System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
        public static string[][] GetCompanyNameList(string prefixText, int count, string contextKey)
        {
            //获取自动完成的选项数据
            List list = new List();
            List nameList = new List();
            List idList = new List();
            CeshiManage ceshimanage = new CeshiManage();

            ceshimanage.GetTopUserName(count, prefixText.ToUpper(), out idList, out nameList);
            for (int i = 0; i < nameList.Count; i++)
            {
                string[] Respuesta = new string[2];
                Respuesta[0] = nameList[i];
                Respuesta[1] = idList[i];
                list.Add(Respuesta);
            }
            return list.ToArray();
        }
    }
}

后台页面用到的方法（管理类）

代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI;
using Oceansoft.Net.Bll;
using SubSonic;
using System.Transactions;

using System.Data;
using Oceansoft.Net.Dal;

namespace Oceansoft.Net.Bll
{
    ///

        private SqlQuery m_sqlquery = Oceansoft.Net.Dal.DB.Select().From(Ceshi.Schema);

        ///

        ///

        #region Ceshi管理

        ///