Hi
I have write a simple webcontrol, which contains properties as below

public class MyClass : WebControl
{
    public Button myButton { get { } set { } }
}

I would like to add design-time support for this control to ease my developer. Once myClass is dropped on web form, I want developer to able to go to property designer, navigate to "myButton" property row, click the drop down and select one of the button exist in current web form.

As now, the aspx code generated is

<cc1: myClass ID="xxx" runat="server" myButton = "OneOfmyButton1"/>

When run the app, I will hit error. I would like to ask for sample how to generate code in designer.cs so that I can have

this.xxx.myButton = this.OneOfmyButton1;

I search from web, but only found expandableObject, InstanceDescriptor ... which I am not sure it is useful for my case.

Please advice. thank you