随便写下ajax~

<!--ajax-->
<script language="javascript" type="text/javascript">
        var xmlHttp;
        
        function createXMLHttpRequest(url1,toid,str)
        {
            //判断浏览器类型并创建对象
            //IE
            if (window.ActiveXObject)
            {
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            //FF
            else if (window.XMLHttpRequest)
            {
                xmlHttp = new XMLHttpRequest();
            }
            updateTotal(url1,toid,str);
        }
        
        function updateTotal(url1,toid,str)
        {
            url = url1;
            xmlHttp.open("GET",url,true);
            xmlHttp.onreadystatechange = function()
            {
                if (xmlHttp.readyState == 4)
            {
                if(xmlHttp.responseText == "false")
                {
                    document.getElementById(toid).innerHTML="<img src='img/icons/no.gif' /><a>"+str+"</a>";
                    var btnOK = document.getElementsByTagName("input");
                    for(var i=0;i<btnOK.length;i++)
                    {
                        if(btnOK[i].type == "submit")
                        {
                            btnOK[i].disabled = true;
                        }
                    }
                }
                if(xmlHttp.responseText == "true")
                {
                    document.getElementById(toid).innerHTML="<img src='img/icons/yes.gif' />";
                    var btnOK = document.getElementsByTagName("input");
                    for(var i=0;i<btnOK.length;i++)
                    {
                        if(btnOK[i].type == "submit")
                        {
                            btnOK[i].disabled = false;
                        }
                    }
                }
                if(xmlHttp.responseText == "is_null")
                {
                    document.getElementById(toid).innerHTML="<img src='img/icons/no.gif' /><a>不能为空</a>";
                    var btnOK = document.getElementsByTagName("input");
                    for(var i=0;i<btnOK.length;i++)
                    {
                        if(btnOK[i].type == "submit")
                        {
                            btnOK[i].disabled = true;
                        }
                    }
                }
                if(xmlHttp.responseText == "not_int"){
                    document.getElementById(toid).innerHTML="<img src='img/icons/no.gif' /><a>必须为数字</a>";
                    var btnOK = document.getElementsByTagName("input");
                    for(var i=0;i<btnOK.length;i++)
                    {
                        if(btnOK[i].type == "submit")
                        {
                            btnOK[i].disabled = true;
                        }
                    }
                }
            }
            }
            xmlHttp.send();
            return false;
        }
    </script>
    
<!--ajax-->

js部分

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;

namespace ZSAJGUNweb
{
    public partial class ajax : System.Web.UI.Page
    {
        ZSAJGUNweb.MyService.WebService1 MyServer = new ZSAJGUNweb.MyService.WebService1();//数据库层
        login_message My_lm = new login_message();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString["Digital"] != null)
            {
                if (Request.QueryString["Digital"].ToString() != "")
                {
                    Digital(Request.QueryString["Digital"].ToString());
                }
                else
                {
                    Response.Write("is_null");
                }
            }
            if (Request.QueryString["FirearmsInfo_only"] != null)
            {
                if (Request.QueryString["FirearmsInfo_only"].ToString() != "")
                {
                    FirearmsInfo_only(Request.QueryString["FirearmsInfo_only"].ToString());
                }
                else
                {
                    Response.Write("is_null");
                }
            }
            if (Request.QueryString["Can_not"] != null)
            {
                if (Request.QueryString["Can_not"].ToString() != "")
                {
                    Response.Write("true");
                }
                else
                {
                    Response.Write("is_null");
                }
            }
            if (Request.QueryString["date"] != null)
            {
                if (Request.QueryString["date"].ToString() != "")
                {
                    date(Request.QueryString["date"].ToString());
                }
                else
                {
                    Response.Write("is_null");
                }
            }
            if (Request.QueryString["is_null"] != null)
            {
                if (Request.QueryString["is_null"] == "")
                {
                    Response.Write("is_null");
                }
                else {
                    Response.Write("true");
                }
            }
            if (Request.QueryString["LockID"] != null)
            {
                if (Request.QueryString["LockID"] == "")
                {
                    Response.Write("is_null");
                }
                else
                {
                    if (not_int(Request.QueryString["LockID"].ToString()))
                    {
                        LockInfo_LockID(Request.QueryString["LockID"].ToString());
                    }
                    else {
                        Response.Write("not_int");
                    }
                }
            }
            Response.End();
        }
        /// <summary>
        /// 验证数字
        /// </summary>
        /// <param name="str"></param>
        public void Digital(string str)
        {
            if (Regex.IsMatch(str, "^[0-9]*$"))
            {
                Response.Write("true");
            }
            else
            {
                Response.Write("false");
            }
            Response.End();
        }
        public bool not_int(string str)
        {
            if (Regex.IsMatch(str, "^[0-9]*$"))
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        /// <summary>
        /// 验证日期(1010-01-01)
        /// </summary>
        /// <param name="str"></param>
        public void date(string str) {
            if (Regex.IsMatch(str, @"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$"))
            {
                Response.Write("true");
            }
            else
            {
                Response.Write("false");
            }
        }
        public void FirearmsInfo_only(string str)
        {
            if (MyServer.FirearmsInfo_where("FirearmsNB = '" + str + "'").Mydt == null)
            {
                Response.Write("true");
            }
            else
            {
                Response.Write("false");
            }
        }
        public void LockInfo_LockID(string str) {
            DataTable mydt = MyServer.LockInfo_where("LockID = " + str + "").Mydt;
            if (mydt != null)
            {
                if (mydt.Rows.Count != 0)
                {
                    Response.Write("false");
                }
                else
                {
                    Response.Write("true");
                }
            }
            else {
                Response.Write("true");
            }
        }
    }
}

处理ajax请求程序

            this.FirearmsNB.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?FirearmsInfo_only='+ this.value,'FirearmsNB_span','必须不同');");
            this.FirearmsType.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?Digital='+ this.value,'FirearmsType_span','必须数字');");
            this.PO.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?Digital='+ this.value,'PO_span','必须数字');");
            this.PD.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?date='+ this.value,'PD_span','必须日期(1010-01-01)');");
            this.BulletsNB.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?Digital='+ this.value,'BulletsNB_span','必须数字');");
            this.CardID.Attributes.Add("onblur", "javascript:createXMLHttpRequest('ajax.aspx?Digital='+ this.value,'CardID_span','必须数字');");

都是textbox控件