Question

I am setting up a list of date times:

DateTime a1
DateTime a2
DateTime a3
DateTime a4

The above looks like this (as DateTime objects):

3/1/2012 10:56
3/1/2012 17:03
3/1/2012 1:38
3/1/2012 5:33

Then I put them in a list and sort:

List<DateTime> ldtBites = new List<DateTime>();
ldtBites.Add(a1);
ldtBites.Add(a2);
ldtBites.Add(a3);
ldtBites.Add(a4);
ldtBites.Sort();

After Sorting I get this:

3/1/2012 1:38:00 AM
3/1/2012 10:56 AM
3/1/2012 5:03:00 PM
3/1/2012 5:33:00 AM

Answer 1

You omitted the definition of w,x,y,z. I defined them as such:

DateTime w = new DateTime(2012, 3, 1, 10, 56, 0);
DateTime x = new DateTime(2012, 3, 1, 17, 3, 0);
DateTime y = new DateTime(2012, 3, 1, 1, 38, 0);
DateTime z = new DateTime(2012, 2, 29, 17, 3, 0);

This causes them to match your values for a1-a4; however, when I run the rest of your code, they sort correctly (a3, a4, a1, a2).

However, I noticed that x and z were the same hour/minute, so my initial test had this:

DateTime z = new DateTime(2012, 3, 1, 17, 3, 0);

When I ran this, I got them to come out in the order you were showing (a3, a1, a2, a4); however, after the AddHours() call went through, the z value was actually 3/2/2012, which is why it was last.