.Net 文本框实现内容提示的实例代码(仿Google、Baidu)

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1.Demo下载：

2.创建数据库、表（我用的sqlserver2008数据库）

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

3.创建自定义函数

复制代码代码如下:

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

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

复制代码代码如下:

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

<%@ Register Assembly="AutoCompleteExtra" Namespace="AutoCompleteExtra" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <style type="text/css">
        .searchTextBox
        {
            border: 1px solid #e1e1e1;
            border-collapse: separate;
            border-spacing: 0;
            padding: 2px 2px 2px 2px;
            white-space: nowrap;
            margin-left: 2px;
            height: 28px;
            line-height: 28px;
            margin-right: 5px;
            font-family: 微软雅黑,宋体;
            font-size: 14px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <div>
                <div class="dd2">
               请输入姓名: <asp:TextBox CssClass="searchTextBox" runat="server" ID="txtCompanyName" Style="width: 280px;"></asp:TextBox>
                    <cc1:AutoCompleteExtraExtender ID="AutoCompleteExtraExtender1" runat="server" ServiceMethod="GetCompanyNameList"
                        TargetControlID="txtCompanyName" AsyncPostback="false" UseContextKey="True" AutoPostback="false"
                        MinimumPrefixLength="1" CompletionInterval="10">
                    </cc1:AutoCompleteExtraExtender>
                </div>
            </div>
        </ContentTemplate>
    </asp:UpdatePanel>
    </form>
</body>
</html>

5.后台页面

复制代码代码如下:

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<string[]> list = new List<string[]>();
            List<string> nameList = new List<string>();
            List<string> idList = new List<string>();
            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();
        }
    }
}

6.后台页面用到的方法（管理类）

复制代码代码如下:

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
{
    /// <summary>
    /// :ceshi
    /// :jibp
    /// :2014-2-27 15:52:15
    ///</summary>
    public class CeshiManage
    {

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

        /// <summary>
        /// Ceshi查询器
        /// </summary>
        public SqlQuery CeshiSelecter
        {
            get { return m_sqlquery; }
            set { m_sqlquery = value; }
        }

        /// <summary>
        /// 构造函数,设置查询器
        ///</summary>
        public CeshiManage()
        {
            m_sqlquery = m_sqlquery.Where("id").IsNotEqualTo("");
        }

#region Ceshi管理

        /// <summary>
        /// 获取ceshi列表
        /// </summary>
        /// <returns></returns>
        public List<Ceshi> getCeshiList()
        {

return CeshiSelecter.ExecuteTypedList<Ceshi>();
}

        /// <summary>
        /// 获取ceshi列表,同时分页操作
        /// </summary>
        /// <returns></returns>
        public List<Ceshi> getCeshiList(int currentPage, int pageSize, out int RecordCount)
        {
            RecordCount = m_sqlquery.GetRecordCount();
            return CeshiSelecter
            .Paged(currentPage, pageSize)
            .ExecuteTypedList<Ceshi>();
        }

        /// <summary>
        /// 新增 ceshi
        /// </summary>
        /// <param name="HandleEntity"></param>
        /// <param name="sErr"></param>
        /// <returns></returns>
        public bool AddCeshi(Ceshi beAddMode, out string sErr)
        {

            sErr = "";
            bool bRet = true;
            try
            {

                using (TransactionScope sc = new TransactionScope())
                {
                    //此处写代码
                    //流水编号的生成
                    //GenerateNo No = new GenerateNo();
                    //No.TableName = "Ceshi"; //表名
                    //No.NoName = "XXX";   //流水号前字母
                    //No.ColName = "CC_Number"; //编号字段
                    //No.CreateTime = "CC_CreateTime"; //日期字段
                    //string BillNo = "";
                    //Customer_Comp.CC_Number = No.AutoGenerateNo();
                    beAddMode.IsNew = true;
                    beAddMode.Save();
                    //LogHelper.WriteLog(logType.新增 , logModule.Deptrelation,"ceshi新增成功("+beAddMode.GetPrimaryKeyValue().ToString()
                    //+")!");
                    //如果生成扩展类请使用add方法方法
                    sc.Complete();
                }
            }
            catch (Exception ex)
            {
                sErr = "ceshi新增不成功!";
                return false;
            }

sErr = "ceshi新增成功!";
return bRet;

}

        /// <summary>
        /// 修改 ceshi
        /// </summary>
        /// <param name="HandleEntity"></param>
        /// <param name="sErr"></param>
        /// <returns></returns>
        public bool UpdataCeshi(Ceshi beUpdataMode, out string sErr)
        {

            sErr = "";
            bool bRet = true;
            try
            {

using (TransactionScope sc = new TransactionScope())
{

                    //如果生成扩展类请使用Update()方法方法
                    beUpdataMode.IsNew = false;
                    beUpdataMode.Save();
                    //LogHelper.WriteLog(logType.修改 , logModule.Deptrelation,"ceshi修改成功("+beUpdataMode.GetPrimaryKeyValue().ToString()
                    //+")!");

                    sc.Complete();
                }
            }
            catch (Exception ex)
            {
                sErr = "ceshi修改不成功!";
                return false;
            }

sErr = "ceshi修改成功!";
return bRet;

}

        /// <summary>
        /// 删除 ceshi
        /// </summary>
        /// <param name="HandleEntity"></param>
        /// <param name="sErr"></param>
        /// <returns></returns>
        public bool DeleteCeshi(Ceshi beDeleteMode, out string sErr)
        {
            sErr = "";
            bool bRet = true;
            try
            {

                using (TransactionScope sc = new TransactionScope())
                {
                    //如果生成扩展类请使用Delete()方法方法
                    Ceshi.Delete(beDeleteMode.GetPrimaryKeyValue());
                    //LogHelper.WriteLog(logType.删除 , logModule.Deptrelation,"ceshi删除成功("+beDeleteMode.GetPrimaryKeyValue().ToString()
                    //+")!");
                    sc.Complete();
                }
            }
            catch (Exception ex)
            {
                sErr = "ceshi删除不成功!";
                return false;
            }

sErr = "ceshi删除成功!";
return bRet;

}

        /// <summary>
        /// 删除 ceshi 列表
        /// </summary>
        /// <param name="HandleEntity"></param>
        /// <param name="sErr"></param>
        /// <returns></returns>
        public bool DeleteCeshiList(List<Ceshi> lstCeshi, out string sErr)
        {

            sErr = "";
            int ii = 0;
            bool bRet = true;
            try
            {

                using (TransactionScope sc = new TransactionScope())
                {
                    //如果生成扩展类请使用Delete()方法方法
                    foreach (Ceshi bedelmode in lstCeshi)
                    {
                        ii++;
                        Ceshi.Delete(bedelmode.GetPrimaryKeyValue());

                        //LogHelper.WriteLog(logType.删除 , logModule.Deptrelation,"ceshi删除成功("+bedelmode.GetPrimaryKeyValue().ToString()
                        //+")!");
                    }
                    sc.Complete();
                }
            }
            catch (Exception ex)
            {
                sErr = "ceshi删除不成功!";
                return false;
            }

sErr = "共" + ii.ToString() + "条单据删除成功!";
return bRet;

}

        public void GetTopUserName(int topCount, string name, out List<string> listId, out List<string> listcname)
        {
            string sql = string.Format(@"Select id,cname from(Select ROW_NUMBER() over(order by cname)as ROWNUM," +
                "id,cname FROM [dbo].[Ceshi] where cname like '%" + name + "%' or dbo.f_GetPy(cname) like '%" + name + "%') as ta where ta.ROWNUM <= " + topCount);
            DataTable dt = new DataTable();
            QueryCommand qc = new InlineQuery().GetCommand(sql);
            dt = DataService.GetDataSet(qc).Tables[0];//将查询出来的数据集放到List中去（查询数据的方法，有很多，这边我用的是Subsonic类自带的查询方法）
            listcname = new List<string>();
            listId = new List<string>();
            foreach (DataRow row in dt.Rows)
            {

listId.Add(row[0].ToString());
listcname.Add(row[1].ToString());

}

#endregion

}
}

7.webconfig配置

复制代码代码如下:

<?xml version="1.0"?>

</providers>
</SubSonicService>

<system.web>
<compilation debug="true" targetFramework="4.0" />

</system.web>

<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>

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