Get date of last seven days

Question

I want to get date of last seven days from now.For example current date is

02-10-2016, get date of seven days like this

01-10-2016,30-09-2016,29-09-2016,28-09-2016,27-09-2016,26-09-2016

My code

string dt = DateTime.Now.ToString("yyyy-MM-dd");
DateTime lastWeek = dt.AddDays(-7.0);

Answer 1

AddDays is a part of DateTime, not of string.
You need to build your dates iteratively and then convert it to a string.

DateTime[] last7Days = Enumerable.Range(0, 7)
    .Select(i => DateTime.Now.Date.AddDays(-i))
    .ToArray();

foreach (var day in last7Days)
    Console.WriteLine($"{day:yyyy-MM-dd}"); // Any manipulations with days go here

Answer 2

Without LINQ, with a simple loop:

DateTime dt = DateTime.Now;

for (int i=0;i<7;i++)
{
      dt = dt.AddDays(-1);
      Console.WriteLine(dt.Date.ToShortDateString());
}