Get previous Friday

int daysSub = 1;

DateTime tempDate = new DateTime();

while(DateTime.Now.SubtractDays(daysSub).DayOfWeek != DayOfWeek.Friday)
{
        daysSub++;
        tempDate = DateTime.Now.SubtractDays(daysSub);
}


DateTime yourLastFriday = tempDate;

If you have a DateTime instance, then you can use a loop to find the previous Friday:

DateTime d = DateTime.Now;

while (d.DayOfWeek != DayOfWeek.Friday)
{
    d = d.AddDays(-1);
}

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ps... did not test

kaufmed your's is way more streamlined but it won't work if today's date is friday and you still want the last friday.


(nice work btw)

also -- there is no subtractdays =) sorry

so you will have to use the .AddDays(-x);

SubtractDays?  is that c# compat?

but it won't work if today's date is friday and you still want the last friday.

Aww... shucks  ={D

How about:

while (d.DayOfWeek != DayOfWeek.Friday)
{
    d = d.AddDays(1);
}

d = d.AddDays(-7);

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very strange - both solutions return 10/28/2011 - I checked the date on the server and it is marked for today...

@AndyAinscow
You shouldn't need the alteration to the logic. If today is Friday, then you wouldn't want to enter the loop, and you would simply subtract seven days. The addition means there will be one needless iteration of the loop.

I am an idiot - wrong calendar - whoops