private void ClearThePage()
{
NewExIntensityListPicker.ClearValue(ListPicker.DataContextProperty);
_viewModel.ValidationError -= _viewModel_ValidationError;
_viewModel = null;
}
public ExercisePage()
{
Device.SetFlags(new[] { "CollectionView_Experimental", "Shell_Experimental" });
InitializeComponent();
BindingContext = new ExercisePageViewModel();
}
private void CheckIfEditOrAddActionRequiredAsync()
{
string action;
if (NavigationContext.QueryString.TryGetValue("action", out action))
{
if (action == "edit")
{
string exIdStr;
int exId;
if (NavigationContext.QueryString.TryGetValue("exId", out exIdStr) && Int32.TryParse(exIdStr, out exId))
{
Exercise exToEdit = App.FitAndGymViewModel.GetExerciseById(exId);
if (exToEdit != null)
_viewModel = new ExercisePageViewModel(exToEdit);
else
throw new Exception(String.Format("Not found Exercise with id = {0} in database invoked from ExercisePage!", exId));
}
else throw new Exception("Wrong NavigationContext.QueryString 'exId' in ExercisePage");
}
else if (action == "add")
_viewModel = new ExercisePageViewModel();
else
throw new Exception(String.Format("Wrong NavigationContext.QueryString (action) in ExercisePage. Action = '{0}'", action));
_viewModel.ValidationError += _viewModel_ValidationError;
DataContext = _viewModel;
}
}