More elegant way to get "Friday of last week"?

[sherifffruitfly]

Hi all,

This is how I'm currently getting Friday of last week. It strikes me as
cumbersome. Is there a slicker/more elegant way?

Thanks for any ideas,

cdj

private string prevFridayStrin g(DateTime day)
{
DateTime rv;
int offset = 0;

switch (day.DayOfWeek)
{
case DayOfWeek.Sunda y:
offset = 5;
break;
case DayOfWeek.Monda y:
offset = 4;
break;
case DayOfWeek.Tuesd ay:
offset = 3;
break;
case DayOfWeek.Wedne sday:
offset = 2;
break;
case DayOfWeek.Thurs day:
offset = 1;
break;
case DayOfWeek.Frida y:
offset = 0;
break;
case DayOfWeek.Satur day:
offset = -1;
break;
}

rv = day.AddDays(-7 + offset);
return rv.ToShortDateS tring();
}

[sherifffruitfly]

Arne Vajhøj wrote:

sherifffruitfly wrote:

Arne Vajhøj wrote:

DateTime dt = DateTime.Now;
while(dt.DayOfW eek != DayOfWeek.frida y) dt = dt.AddDays(-1);

Nice. The idea is perfectly clear - thanks!

If you want to go 7 days back if today is Friday then you will need:

Gah! Killed the one-liner, eh? lol!

thanks again,

cdj