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Public Class BaseForm
        Inherits MyBaseForm
        Implements MicroFour.StrataFrame.UI.Windows.Forms.IContainerControl

MyBaseForm is inhereted from Devexpress XtraForm.

I 've got error message below in design time when SimpleButton (Devexpress wrapped) object were dropped on my form. My form is based on StandartForm which is based on my changed BaseForm. With Textedit Object there is no similar error.

"The object that the business object has been dropped on must be implement
MicroFour.strataFrame.UI.Windows.Forms.IcontainerControl"

IContainerControl Interface is implemented on baseform class but is not root (base class) now, Do I implement this interface on my base class ?

I've tried to set Business Object property of text control, I couldn't see BusinessObject in the list.