Let's say I have this sub in vb.net:

    ''' <summary>
    ''' Validates that <paramref name="value"/> is not <c>null</c>.
    ''' </summary>
    '''
    ''' <param name="value">The object to validate.</param>
    '''
    ''' <param name="name">The variable name of the object.</param>
    '''
    ''' <exception cref="ArgumentNullException">If <paramref name="value"/> is <c>null</c>.</exception>
    Sub ValidateNotNull(ByVal value As Object, ByVal name As String)
        If value Is Nothing Then
            Throw New ArgumentNullException(name, String.Format("{0} cannot be null.", name))
        End If
    End Sub

My question is, is it proper to call this ValidateNotNull (which is what I would call it in C#) or should I stick with VB terminology and call it ValidateNotNothing instead? Also, in my exception, is it proper to say "cannot be null", or would it be better to say "cannot be Nothing"?

I sort of like the way I have it, but since this is VB, maybe I should use Nothing. But since the exception itself is called ArgumentNullException, it feels weird to make the message say "cannot be Nothing".

Anyway, I guess it's pretty nitkpicky, just wondered what you folks thought.