1.Ajax post 方法
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AJAXtest.aspx.cs" Inherits="treeview.AJAXtest" %> <!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 id="Head1" runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>Ajax实例1</title> <script src="js/jquery-1.4.4.min.js"></script> <script type="text/javascript"> $(function () { $("#btn1").click(function () { var txtparam1 = $("#txtParam1").val(); var txtparam2 = $("#txtParam2").val(); $.ajax({ url: "RepeatName.ashx",//发送到本页面后台AjaxMethod方法 "AJAXtest.aspx/AjaxMethod" type: "POST", dataType: "json",//返回格式必须是json格式，否则会进error方法，如果去掉可以接受任意的格式数据。
//后台如果传自定义类 的数据 该如何接收？ 后台需要用newtonsoft把类转换成json数据 返回。然后前端在success里直接 data.id即可。 async: true,//async翻译为异步的，false表示同步，会等待执行完成，true为异步 contentType: "application/json; charset=utf-8",//不可少 data: "{param1:'" + txtparam1 + "',param2:'" + txtparam2 + "'}", success: function (data) { $("#result").html(data.d); }, error: function () { alert("请求出错处理"); } }); }); }); </script> </head> <body> <form id="form1" runat="server"> 参数1：<input type="text" id="txtParam1" value="" /><br /> 参数2：<input type="text" id="txtParam2" value="" /><br /> <input type="button" id="btn1" value="提交"/><br /> <div id="result"></div> </form> </body> </html>
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; namespace treeview { public partial class AJAXtest : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { int dfe = 23; } //type方式必须是post，方法必须是静态的，方法声明要加上特性[System.Web.Services.WebMethod()]，传递的参数个数也应该和方法的参数相同。 [System.Web.Services.WebMethod()] public static string AjaxMethod(string param1, string param2) { return "1参数为：" + param1 + "，2参数为：" + param2; } } }
2. Ajax get
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ajaxGet.aspx.cs" Inherits="treeview.ajaxGet" %> <!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 id="Head1" runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>Ajax实例1</title> <script src="js/jquery-1.4.4.min.js"></script> <script language="Javascript"> function RepeatName() { var name = $("#txtLoginName").val(); $.ajax({ type: "GET", url: "RepeatName.ashx", data: "name=" + name, //如果这里是传多个参数的话 可以写成 date: "name="+name+"&"+"其它的名字="+页面获取的val(); cache: false, async: false, success: function (data) { if (data == "1") { alert("此用户已经注册"); } else{ alert("没有注册"); } }, error: function () { alert("请求出错处理"); } }); } </script> </head> <body> <div> <input type="text" name="txtLoginName" id="txtLoginName" onblur="return RepeatName()" /> <span style="color: red; font-size: 13px" id="txtLoginNamespan"> </span> </div> </body> </html>
using System; using System.Collections; using System.Data; using System.Linq; using System.Web; using System.Web.Services; using System.Web.Services.Protocols; using System.Xml.Linq; namespace treeview { /// <summary> /// $codebehindclassname$ 的摘要说明 /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] public class RepeatName : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; //context.Response.Write("Hello World"); string name = context.Request.QueryString["param1"]; if (name == "123") { context.Response.Write("1"); } else { context.Response.Write("Hello World"); } } public bool IsReusable { get { return false; } } } }