1. DateTime beforDT = System.DateTime.Now;
2. 
   
3. //耗时巨大的代码
4. 
   
5. DateTime afterDT = System.DateTime.Now;
6. TimeSpan ts = afterDT.Subtract(beforDT);
7. "DateTime总共花费{0}ms.", ts.TotalMilliseconds);

1. new Stopwatch();
2. sw.Start();
3. 
   
4. //耗时巨大的代码
5. 
   
6. sw.Stop();
7. TimeSpan ts2 = sw.Elapsed;
8. "Stopwatch总共花费{0}ms.", ts2.TotalMilliseconds);

黄世宇/Shiyu Huang's Personal Page：​​https://huangshiyu13.github.io/​​