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复制代码 代码如下: <!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> <title></title> <script type ="text/javascript"> function btnClick() { var xmlhttp = xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); if (!xmlhttp) { alert("创建xmlhttp对象异常!"); return false; } var text1 = document.getElementById("Text1"); xmlhttp.open("post","GetPrice2.ashx?ts"+text1, false); xmlhttp.onreadystatechange = function () { if (xmlhttp.readyState == 4) { if (xmlhttp.status == 200) { document.getElementById("Text2").value = xmlhttp.responseText; } else { alert("Ajax返回错误!"); } } } xmlhttp.send(); } </script> </head> <body> <p> 产品名称:<input id="Text1" type="text" /></p> <p> 价格:<input id="Text2" type="text" /></p> <p> <input id="Button1" type="button" value="查询" onclick = "btnClick()"/></p> </body> </html> 复制代码 代码如下: <%@ WebHandler Language="C#" Class="GetPrice" %> using System; using System.Linq; using System.Web; using DataSetProductsTableAdapters; public class GetPrice : IHttpHandler { public void ProcessRequest (HttpContext context) { context.Response.ContentType = "text/plain"; //context.Response.Write("Hello World"); string name = context.Request["text1"]; var data = new PriceTableAdapter().GetDataByName(name);//需要建一个强类型的dataset if (data.Count <= 0) { context.Response.Write("none|0"); } else { context.Response.Write("ok|" + data.Single().Price); } } public bool IsReusable { get { return false; } } } |
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