private CheckboxCollection _check_box_items;		/// 
		/// 指定复选框按钮集合		/// 
		[Category("7510skin-复选按钮组"),Description("指定复选按钮集合")]		[TypeConverter(typeof(System.ComponentModel.CollectionConverter))]		[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]		public CheckboxCollection CheckBoxItems		{			get			{				if (this._check_box_items == null)					this._check_box_items = new CheckboxCollection(this);				return this._check_box_items;			}		}

在控件定义一个集合属性，必须添加：

[TypeConverter(typeof(System.ComponentModel.CollectionConverter))]

[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]