一般处理程序

1、一个简单的ashx

 public class ClientData : BasePage, IHttpHandler
    {

        protected HttpContext context;  //方法中用到
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain"; //结果按原样输出文本
            this.context = context;
            var action = context.Request["action"]; //接收ajax的url地址参数   eg：url: "Handle/ProviderHandle.ashx?action=GetAirLines",
            switch (action)
            {
                case "queryInvoiceOrders":
                    queryInvoiceOrders();
                    break;
                case "updateInvoiceOrders":
                    updateInvoiceOrders();
                    break;
            }
        }
    }

2、接收数据

//可以获取任何方式
string value = context.Request.Params["User"];

//可以获取任何方式
string value = context.Request["key"]

//POST方式传参，直接根据表单控件的name属性访问Request.Form 
string user = context.Request.Form["User"]; 

//GET方式传参 
string user = context.Request.QueryString["User"];