request 获取参数，response 响应，
public string getQueryStringString(string obj)
{
HttpRequest request = HttpContext.Current.Request;
return getToString(request.QueryString[obj]);
}
这种获取参数的前端写法：
$.ajax({
type: ‘post‘,
url: ‘mobile.ashx?type=login‘,
data: {
"unname": $("#user").val()
, "upass": $("#password").val()
},
这种获取参数的前端写法：
public string getFormString(string obj)
{
HttpRequest request = HttpContext.Current.Request;
return getToString(request.Form[obj]);
}
var test = {
"test": picSrc
, "type": "uploadimg1"
, "tid": taskID
, "imgname": $("#imgname" + imgtype).val() + date
}
HttpContext.Current.Server.MapPath("xxxxxx");
原文：http://www.cnblogs.com/shourenwangzi/p/7943913.html