Question

I’m trying to return an error message if the cbo_moduleName field is empty once the submit button is clicked but nothing is happening.

Private Sub btnSubmit_Click()

    If IsEmpty(cbo_moduleName.Value) Then
        MsgBox ("Module Name field empty!")
        Exit Sub
    End If

End Sub

Any idea where I am making my mistake?

Answer 1

IsEmpty checks whether a variable of type Variant contains a special value Empty.

What you probably meant is checking if a string is an empty string:

If Len(cbo_moduleName.Value) = 0 Then
    ...
End If