private async System.Threading.Tasks.Task ChangeTaskState(string taskid)
        {
            AreBtnsEn = false;
            var checkResult = await n_Restctrl.CheckTask(taskid);

            if (checkResult.StatusCode == HttpStatusCode.OK)
            {
                await Refresh();
            }
            else if (checkResult.StatusCode == HttpStatusCode.Unauthorized)
            {
                await Application.Current.MainPage.DisplayAlert("Sorry", "You do not have permission to do this", "Ok");
            }
            else
            {
                await Application.Current.MainPage.DisplayAlert("Error", "Something went wrong, check your connection", "Ok");
            }
            AreBtnsEn = true;
        }