public async void RefreshData()
        {
            BasicinformationDetails BID = new BasicinformationDetails();

            Employee = await BID.GetCurentUserBasicinformationDetailsAsync(URLConfig.Currentuserapiurl);

            var employeeSch = Employee.EmployeeScheduels;
            var shc1        = employeeSch.Where(y => y.DayOfWeek == -1);
            ObservableCollection <EmployeeSchedule> castlist = new ObservableCollection <EmployeeSchedule>(shc1);

            MYschdeule2 = castlist;
        }
        /*   public Allspecialdays(INavigation nav)
         *  {
         *      this.Navigation = nav;
         *      loadData();
         *  }*/

        public async void loadData()
        {
            BasicinformationDetails BID = new BasicinformationDetails();

            Employee = await BID.GetCurentUserBasicinformationDetailsAsync(URLConfig.Currentuserapiurl);

            var employeeSch = Employee.EmployeeScheduels;
            var shc1        = employeeSch.FirstOrDefault(y => y.DayOfWeek == -1);

            //uu.Clear();
            //var z = employeeSch.Find(y => y.DayOfWeek == 0);
            var data = employeeSch.Where(y => y.DayOfWeek == -1);

            Device.BeginInvokeOnMainThread(() => {
                foreach (var item in employeeSch.Where(y => y.DayOfWeek == -1).ToList())
                {
                    //uu.Add(item);
                    MYschdeule2.Add(item);
                }
            });
            constants.datas = MYschdeule2;
        }