profiling - High resolution timer in .NET

Question

I'd like to do some basic profiling of my code, but found that the DateTime.Now in C# only have a resolution of about 16 ms. There must be better time keeping constructs that I haven't yet found.

Answer 1

Here is a sample bit of code to time an operation:

Dim sw As New Stopwatch()
sw.Start()
//Insert Code To Time
sw.Stop()
Dim ms As Long = sw.ElapsedMilliseconds
Console.WriteLine("Total Seconds Elapsed: " & ms / 1000)

EDIT:

And the neat thing is that it can resume as well.

Stopwatch sw = new Stopwatch();
foreach(MyStuff stuff in _listOfMyStuff)
{
    sw.Start();
    stuff.DoCoolCalculation();
    sw.Stop();
}
Console.WriteLine("Total calculation time: {0}", sw.Elapsed);

The System.Diagnostics.Stopwatch class will use a high-resolution counter if one is available on your system.