void btn_Checked(object sender, RoutedEventArgs e)
{
var btn = sender as RadioButton;
_testType = (TestType)(int)btn.GetValue(Grid.ColumnProperty);
MyCellFactory.StoreValue(this, _testType);
}
void CheckCell_Checked(object sender, RoutedEventArgs e)
{
MyCellFactory.StoreValue(this, this.IsChecked);
}