private void PickDate(DateTime minDateTime, bool isPickingStartDate)
        {
            var datePickerDialog = new CustomDatePickerDialog(minDateTime);

            datePickerDialog.PickDate += (s, se) =>
            {
                if (!(s is DateTime dateTime))
                {
                    return;
                }
                if (isPickingStartDate)
                {
                    startTime = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, startTime.Hour,
                                             startTime.Minute, startTime.Second);
                    UpdateTime();
                }
                else
                {
                    endTime = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day, endTime.Hour,
                                           endTime.Minute, endTime.Second);
                }
                UpdateView();
            };
            datePickerDialog.Show(FragmentManager, "");
        }
        protected void PickDeadline(object sender, EventArgs eventArgs)
        {
            var datePickerDialog = new CustomDatePickerDialog();

            datePickerDialog.PickDate += (s, e) =>
            {
                if (s is DateTime dateTime)
                {
                    deadLine         = dateTime;
                    edtDeadline.Text = dateTime.ToDateString();
                }
            };

            datePickerDialog.Show(FragmentManager, "");
        }