public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string jobTypeID = context.Request.Form["jobTypeID"];
DataTable dt = new DataAccess.RunProcedure().SpotGetSaleList(jobTypeID).Tables[0];
dt.TableName = "sale";
DataSet ds = new DataSet();
ds.Tables.Add(dt.Copy());
string json = JsonConvert.SerializeObject(ds);
context.Response.Write(json);
}