C#计算程序执行过程花费时间的方法

void AddInfo()
{
 System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
 sw.Start();
 for (int i = 0; i < 1000; i++)
 {
  Console.WriteLine(i.ToString());
  System.Threading.Thread.Sleep(10);
 }
 sw.Stop();
 Console.WriteLine("Time elapsed: {0}", sw.Elapsed);
}