.OrderBy(DayOfWeek) to treat Sunday as the end of the week

Question

I\'m ordering a number of objects by their System.DayOfWeek property.

DayOfWeek treats Sunday as the start of the week, whereas I would like it to be ordered so

Answer 1

The simplest approach would be:

var orderedTimeBands = timeBands.OrderBy(x => ((int) x.DayOfWeek + 6) % 7)
                                .ToList()

So we have:

Name        Original value      Value after arithmetic
Sunday       0                  6
Monday       1                  0
Tuesday      2                  1
Wednesday    3                  2
Thursday     4                  3
Friday       5                  4
Saturday     6                  5

... which is what you want, I think.