사용자 지정 Windows Forms 컨트롤에서 디자인 타임 열 크기 조정을 활성화하려면 어떻게 해야 합니까?

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.Design;   // Note: add reference required: System.Design.dll

namespace WindowsFormsApplication1 {
    [Designer(typeof(MyDesigner))]   // Note: custom designer
    public partial class UserControl1 : UserControl {
        public UserControl1() {
            InitializeComponent();
        }

        // Note: property added
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public ListView Employees { get { return listView1; } }
    }

    // Note: custom designer class added
    class MyDesigner : ControlDesigner {
        public override void Initialize(IComponent comp) {
            base.Initialize(comp);
            var uc = (UserControl1)comp;
            EnableDesignMode(uc.Employees, "Employees");
        }
    }
}