private async void ProceedButton_Clicked(object sender, EventArgs e) { if (ToAddItems.Count == 0) { await DisplayAlert(ResxFile.str_error, ResxFile.err_NoPlanItem, ResxFile.err_confirm); return; } var assignPlan = await APIConnection.AssignPlan(ToAddPlan, ToAddItems, coachID, selectedStudent.Id); if (assignPlan.Errors != null) { await DisplayAlert(ResxFile.str_error, assignPlan.Errors[0].Message, ResxFile.err_confirm); return; } await DisplayAlert(ResxFile.msg_Success, ResxFile.msg_SuccNewPlan, ResxFile.btn_ok); await Navigation.PopToRootAsync(); }