/// <summary>
/// 移除一个子项
/// </summary>
/// <param name="child"></param>
public void RemoveChild(CheckableItemBase child)
{
if (Children.IndexOf(child) >= 0)
{
Children.Remove(child);
}
}
/// <summary>
/// 增加一个子项
/// </summary>
/// <param name="child"></param>
public void AddChild(CheckableItemBase child)
{
Children.Add(child);
child.Parent = this;
}
