直接上代码:
第一种方法利用System.DateTime.Now
- </pre><pre name="code" class="csharp">static void SubTest()
- {
- DateTime beforDT = System.DateTime.Now;
- //耗时巨大的代码
- DateTime afterDT = System.DateTime.Now;
- TimeSpan ts = afterDT.Subtract(beforDT);
- Console.WriteLine("DateTime总共花费{0}ms.", ts.TotalMilliseconds);
- }
- 第二种方法
- static void SubTest()
- {
- <span style="white-space:pre"> </span>Stopwatch sw = new Stopwatch();
- <span style="white-space:pre"> </span>sw.Start();
- <span style="white-space:pre"> </span>//耗时巨大的代码
- <span style="white-space:pre"> </span>
- <span style="white-space:pre"> </span>sw.Stop();
- <span style="white-space:pre"> </span>TimeSpan ts2 = sw.Elapsed;
- <span style="white-space:pre"> </span>Console.WriteLine("Stopwatch总共花费{0}ms.", ts2.TotalMilliseconds);
- }
- 第三种方法
- [System.Runtime.InteropServices.DllImport("Kernel32.dll")]
- static extern bool QueryPerformanceCounter(ref long count);
- [System.Runtime.InteropServices.DllImport("Kernel32.dll")]
- static extern bool QueryPerformanceFrequency(ref long count);
- static void SubTest()
- {
- <span style="white-space:pre"> </span>long count = 0;
- <span style="white-space:pre"> </span>long count1 = 0;
- <span style="white-space:pre"> </span>long freq = 0;
- <span style="white-space:pre"> </span>double result = 0;
- <span style="white-space:pre"> </span>QueryPerformanceFrequency(ref freq);
- <span style="white-space:pre"> </span>QueryPerformanceCounter(ref count);
- <span style="white-space:pre"> </span>//耗时巨大的代码
- <span style="white-space:pre"> </span>
- <span style="white-space:pre"> </span>QueryPerformanceCounter(ref count1);
- <span style="white-space:pre"> </span>count = count1 - count;
- <span style="white-space:pre"> </span>result = (double)(count) / (double)freq;
- <span style="white-space:pre"> </span>Console.WriteLine("QueryPerformanceCounter耗时: {0} 秒", result);
- }