[MonoDevelop] Adding own component to toolbox

[blazi23]

Hello everyone!

I start to learn MonoDevelop and I will try to use it with NHibernate, but my first problem is I can't add my own toolbox item to the list. I would like to use it in UI Designer instead of manually typing it in *.cs.

I have class:

public class UniversalComboBoxGTKSharp : Gtk.ComboBox

How can I do this?

PS. This class is in seperate *.dll. I was tring to add this using "Add toolbox item". I point on my dll file and there is error message: "The file ... does not contain any components"...