Shows a modeless dialog. This method should be used instead ofForm.Show, which may lead to unexpected behavior. 

This method calls the ShowModelessDialog(System.Windows.Forms.IWin32Window owner, System.Windows.Forms.Form formToShow) method with owner set to Nothing or null.

Public static Function ShowModelessDialog(
    formToShow As Form
) As void

public static void ShowModelessDialog(
    Form formToShow
);