可参考 Visual Studio调试之断点进阶篇(http://www.cnblogs.com/killmyday/archive/2009/09/27/1574919.html )
方法1.修改代码,用System.Diagnostics.Trace.WriteLine(...)
方法2.设置断点的When hit,输出时间,从而可准确判断执行时长,简单有效。
Function: $FUNCTION, Thread: $TID $TNAME, Start_PresentData = |{start}
However, we can also use System.Diagnostics.Debug.WriteLine(***)
MessageBox.Show(***) (Windows.Form.)
MessageBox.Show(lenthInfo.ToString(), "", MessageBoxButtons.AbortRetryIgnore);