void calculatedData()
        {
            try
            {
                DateTime sd = startDatePicker.Date + startTime;
                DateTime ed = endDatePicker.Date + endTime;

                if (DateTime.Compare(sd, ed) >= 0)
                {
                    CrossHud.Current.ShowError(message: "开始时间必须早于结束时间", timeout: new TimeSpan(0, 0, 4));
                    return;
                }

                string url    = App.BaseURL + "AppFlow/ComputedFlowAllWater";
                string parama = "flowid=" + _flow.flowid + "&" + "sdt=" + sd.ToString("yyyy-MM-dd HH:mm") + "&" + "edt=" + ed.ToString("yyyy-MM-dd HH:mm") + "&" + "para1=" + entry1.Text + "&" + "para2=" + entry2.Text;

                Console.WriteLine("请求接口:" + url);
                string result = EasyWebRequest.sendOtherPOSTHttpWebRequest(url, parama);
                Console.WriteLine("请求结果:" + result);
                calculated = JsonConvert.DeserializeObject <calculatedResult>(result);
            }
            catch (Exception ex)
            {
            }
        }