[EditorBrowsable(EditorBrowsableState.Never)]
public void Add(CheckBox check)
{
+ if (null == check) return;
base.AddSelection(check);
check.ItemGroup = this;
}
[EditorBrowsable(EditorBrowsableState.Never)]
public void Remove(CheckBox check)
{
+ if (null == check) return;
base.RemoveSelection(check);
check.ItemGroup = null;
}