C# windows forms and user controls inheritance from VB forms and user controls.

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C#

VB

inheritance

OOP

Hi,

I have some VB windows forms and user controls which they inherit from some base classes like BaseUserControl and BaseForm, every behavior that I want them to have I'll just add it into the Base classes, Here is a problem, one project inside my solution is written in C# and the forms and user controls of this project they also inherit from those VB Base classes, but the functionalities that I add to the base classes will not be added to the C# classes,

It's my BaseUserControl,

Public Class BaseUserControl
    Inherits System.Windows.Forms.UserControl



    Protected Overrides Sub InitLayout()
        MyBase.InitLayout()
        If (Not handlerAdded) Then tryaddinghandler()
        TakeMenuEntranceDate()
    End Sub

End Class

It's one of my user controls,

Public Class AveHesab1
    Inherits Acc.WinUI.Common.BaseUserControl
'...
End Class

So far everything goes well and there is no problem.

Here is the problem,

public class frmMoshakhasatPersonel : Acc.WinUI.Common.BaseUserControl
//...
End Class

The functionalities that I add into the BaseUserControl are added into the all VB user controls that inherit from it, but none of the C# user controls Get the behavior inserted into BaseUserControl.

Any help and idea to solve it is welcome,
Thanks,

What I have tried:

I'm still working on it but yet haven't found a solution.