ajax ashx返回datareader,C#ashx异步处理数据
满意答案
wkls1314
2013.04.18
采纳率：56% 等级：12
已帮助：13866人
.ashx文件[WebService(Namespace = " http://***.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class SharperHandler : IHttpHandler
{ public void ProcessRequest(HttpContext context)
{
SqlDataReader dr=new ToolrCtrl().SharpeneinfoReturn(context.Request["id"].Trim());
if (dr.Read())
{
context.Response.Write(string.Format("{0}$$${1}$$${2}"
, dr["makerno"].ToString(),dr["regfee"].ToString(),dr["reglead"].ToString()));///返回一个多个参数的字符串
}
else
{
context.Response.Write("0");
}
}前台function createXMLHttpRequest() {
if (window.XMLHttpRequest) return new XMLHttpRequest();
try { return new ActiveXObject('MSXML2.XMLHTTP.4.0'); }
catch (e) {
try { return new ActiveXObject('MSXML2.XMLHTTP.3.0'); }
catch (e) {
try { return new ActiveXObject('MSXML2.XMLHTTP.2.6'); }
catch (e) {
try { return new ActiveXObject('MSXML2.XMLHTTP'); }
catch (e) {
try { return new ActiveXObject('Microsoft.XMLHTTP'); }
catch (e) { return null; }
}
}
}
}
} ///ajax验证tid是否存在及返回产品信息
function checktbxDescription() { var tbxDescription = document.getElementById("tid").value;
chkXML = createXMLHttpRequest();
if (chkXML == null) { top.MessageBox.show("info", "你的浏览器不支持XmlHttpRequest,请更新!", null, null); return false; }
chkXML.open("GET", "validate/SharperHandler.ashx?id=" + tbxDescription, true);
chkXML.onreadystatechange = function() {
if (chkXML.readyState == 4) {
if (chkXML.status == 200) {
if (chkXML.responseText == "0") {
alert("[温馨提示]该研磨编号不存在或无效，请重新输入！");
document.getElementById("tid").select();
document.getElementById("tid").value = "";
return false;
}
else {
var result=chkXML.responseText;
if (result != null)
{
var val = result.split('$$$');
$("txtProPrice").value = (parseFloat(val[1])).toFixed(2);
var today = new Date();
var day = today.getDate();
var month = today.getMonth() + 1;
var year = today.getYear();
var date = year + "-" + month + "-" + day;
var ss=parseInt(val[2]);
date = DateAdd(date,ss);
$("txtdate").value = date;
}
document.getElementById("tid").select();
return true;
}
}
}
}
chkXML.send(null);
return true;
}
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