Article From:https://www.cnblogs.com/qixiaolan/p/9970468.html

 

 

Sometimes you need to know how long it takes to execute a method, and a time difference TimeSpan is used.

                DateTime startTime = DateTime.Now;//Method start time//{
                //    You need to test the code.//}
               
                DateTime endTime = DateTime.Now;//Method End Time

                TimeSpan tS = endTime - startTime;

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