Namespace MyCompany.WinUI.MyClasses _ Public Class MyGrid Inherits System.Windows.Forms.DataGrid ' put whatever code you need here End Class 'MyGrid _ Public Class MyLabel Inherits System.Windows.Forms.Label End Class 'MyLabel _ Public Class MyTextBox Inherits System.Windows.Forms.TextBox End Class 'MyTextBox End Namespace 'MyCompany.WinUI.MyClassesThat should get you started ...