mootools框架：https://files.cnblogs.com/mimengjiangnan/mootools-release-1.11.js
HTML代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AjaxTextBox.aspx.cs" Inherits="AjaxTextBox" %>
<!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>AjaxTextBox</title>
<script type="text/javascript" src="mootools-release-1.11.js" ></script>
<script type="text/javascript" >
var values;
window.addEvent("domready",function(){
$("ajaxtextbox").addEvent("keypress",function(e){
var keychar;
var keynum;
if(window.event) // IE
{
if(window.event.keyCode==8){//判断Backspace键
values=values.substr(0,values.length-1);
$("ajaxtextbox").value=values;
}
keynum = window.event.keyCode;
}
else if(e.which) // Netscape/Firefox/Opera
{
if(e.which==8){
values=values.substr(0,values.length-1);
$("ajaxtextbox").value=values;
}
keynum = e.which;
}
keychar = String.fromCharCode(keynum);
if(/^[a-zA-Z0-9_\u4e00-\u9fa5]+$/.test(keychar)){//判断是不是中文，英文，数字
$("ajaxtextbox").value+=keychar;
values=$("ajaxtextbox").value;
}
if($("ajaxtextbox").value==""){
return;
}
var url="AjaxTextBox.aspx?value="+$("ajaxtextbox").value;
new Ajax(url,{method:'post',
onComplete:function(){
$("msg").innerHTML=this.response.text;
if($("ajaxtextbox").value.length>values.length){
$("ajaxtextbox").value=values;
}
}
}).request();
});
});
function getMsg(obj){
$("ajaxtextbox").value=obj.innerHTML;
$("msg").innerHTML="";
}
</script>
</head>
<body>
<input type="text" id="ajaxtextbox" name="ajaxtextbox" style="170px;" runat="server" />
<div id="msg" style="170px;"></div>
</body>
</html>
.CS代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class AjaxTextBox : System.Web.UI.Page
{
public static DataTable dt = new DataTable();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (dt.Rows.Count == 0)
{
dt.Columns.Add("cotents");
DataRow dr = dt.NewRow();
dr[0] = "0a2b3c";
DataRow dr1 = dt.NewRow();
dr1[0] = "0e2f3g";
dt.Rows.Add(dr);
dt.Rows.Add(dr1);
}
}
if (!String.IsNullOrEmpty(Request["value"]))
{
Seach(Request["value"]);
}
}
protected void Seach(string value)
{
string seach = "<div style=\"170px; background-color:InfoBackground;\" ;>";
for (int i = 0; i < dt.Rows.Count; i++)
{
if(dt.Rows[i]["cotents"].ToString().StartsWith(value.Trim()))
{
seach += "<div style=\"170px; cursor:pointer;\" onclick=\"getMsg(this)\" >" + dt.Rows[i]["cotents"].ToString() + "</div>";
}
}
seach += "</div>";
Response.Clear();
Response.Write(seach);
Response.End();
}
}