C# 自定义集合

private CheckboxCollection _check_box_items;
		/// <summary>
		/// 指定复选框按钮集合
		/// </summary>
		[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)]