private void OnMouseDown(object sender, MouseButtonEventArgs e)
{
int row = GetHoveredRow(e.GetPosition(this));
int column = GetHoveredColumn(e.GetPosition(this));
_viewModel.SelectCell(row, column);
}
private void OnClearSelection(object sender, RoutedEventArgs e)
{
_viewModel.SelectCell(null, null);
_viewModel.SelectTreeItem(null);
}
