protected override void ClearItems()
{
if (RangeActionsSupported)
{
var removed = new List <T>(this);
Action action = () =>
{
base.ClearItems();
base.OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, removed));
};
if (_dispatcherHelper != null)
{
_dispatcherHelper.InvokeOnUiThread(() => action.Invoke());
return;
}
action.Invoke();
}
else
{
while (Count > 0)
{
RemoveAt(Count - 1);
}
}
}
public void RaiseCanExecuteChanged()
{
_dispatcherHelper.InvokeOnUiThread(() =>
{
_command.RaiseCanExecuteChanged();
CanExecuteChanged?.Invoke(this, EventArgs.Empty);
});
}
