System.Diagnostics.Stopwatch watch = new Stopwatch();
watch.Start();
//要计算的操作
DoSomeThing();
watch.Stop();
TimeSpan timeSpan = watch.Elapsed;
System.Diagnostics.Stopwatch watch = new Stopwatch();
watch.Start();
//要计算的操作
DoSomeThing();
watch.Stop();
TimeSpan timeSpan = watch.Elapsed;