有没有简单的方法在C#中创建序数？

enum DaysOfWeek
{
    Sunday,
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday
}

DaysOfWeek.Sunday    = 0
DaysOfWeek.Monday    = 1
DaysOfWeek.Tuesday   = 2
DaysOfWeek.Wednesday = 3
DaysOfWeek.Thursday  = 4
DaysOfWeek.Friday    = 5
DaysOfWeek.Saturday  = 6

enum DaysOfWeek
{
    Sunday = 1,
    Monday = 2,
    Tuesday = 3,
    Wednesday = 4,
    Thursday = 5,
    Friday = 6,
    Saturday = 7
}