[C#]コントロールのプロパティ固定(継承)

    class TreeViewEx : System.Windows.Forms.TreeView
    {
        public TreeViewEx() : base()
        {
            base.AllowDrop = true;
        }

        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        public override bool AllowDrop
        {
            get
            {
                return base.AllowDrop;
            }
            set
            {
            }
        }
    }