Enum Parameters

List<Color> allow = new List<Color> { Color.Red, Color.Green, Color.Yellow };
if (!allow.Contains(color))
{
    throw new ArguementException("Invalid Color");
}

Dim allow As New List(Of Color)()
allow.Add(Color.Red)
allow.Add(Color.Green)
allow.Add(Color.Yellow)
If Not allow.Contains(color) Then
Throw New ArguementException("Invalid Color")
End If

Enum Color
    Red = 1
    Green = 2
    Yellow = 3
End Enum