Cause this VB6-like smell, which VB.NET allows, to error instead: WinFormType.InstanceProp=Value [DISABLE My.Forms]

Question

I have notice something very obnoxious with VB.Net\'s treatment of Winform objects.

This has trashed several hours of our time. It will only get worse as we have more

Answer 1

Sorta. You could create a function or override ShowDialog that checks the My.Forms collection to see if the current instance is in it and if it is thrown an exception. There's not a setting that can be used to prevent it from being used.

EDIT: adding sample code illustrating the concept (using a beep instead of an exception).

    Shared Function FormIsInMyForms(formName As String, frm As Form)
        If formName = "Form1" Then
            If frm.Equals(Form1) Then
                Return True
            Else
                Return False
            End If
        End If
        Return False

    End Function

    Public Overloads Sub ShowDialog()

        If FormIsInMyForms("Form1", Me) Then
            Beep()
        End If

        MyBase.ShowDialog()
    End Sub

Doing the same thing via reflection is left as an exercise for the reader... :)