MonoMobile.Views.ReflectiveCommand.CreateCommand C# (CSharp) Method

		private void CreateCommand()
		{
			if (_Execute == null)
				throw new Exception("The method supplied for the Command does not exist. Check spelling.");
			
			var notifier = _ViewModel as INotifyPropertyChanged;
			if (notifier == null)
			{
				var dataContext = _ViewModel as IDataContext<object>;
				if (dataContext != null)
				{
					notifier = dataContext.DataContext as INotifyPropertyChanged;
				}
			}

			if (notifier != null && _CanExecute != null)
			{
				notifier.PropertyChanged += (s, e) =>
				{
					if (e.PropertyName == _CanExecute.Name)
						OnCanExecuteChanged();
				};
			}
		}