How do I use an Object Browser Editor for a custom WinForm Control?

Question

I want to create a property off a WinForm custom control that I can browse to an object in my solution and set a string. I am thinking that there is already a browser editor control but I could not find any example on Google.

Example (see the question marks):

[Browsable(true),   
Category("Custom"),   
Description("Specifies the object Type"),   
Editor(typeof(?), typeof(?))]   
public string ObjectType   
{  

}

Thanks for your help.