Data Type VB.Net Tutorial

Public Enum workDays
        Saturday
        Sunday = 0
        Monday
        Tuesday
        Wednesday
        Thursday
        Friday
        invalid = -1
    End Enum
        
Public Class Tester
    Public Shared Sub Main
        Dim MyDay As WorkDays
        MyDay = WorkDays.Saturday
        If MyDay < workDays.FriDay Then
            Console.WriteLine("It's the weekend.Invalid work day!")
        End If
    End Sub
End Class
It's the weekend.Invalid work day!