20190919-c-sharp-calculate-execution-time

20190919-c-sharp-calculate-execution-time/README.md

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+C# (sharp) – Calculate Execution Time
+======
+
+![alt text](screenshots/170919162538937.png)
+
+Stopwatch is designed for this purpose, and is one of the best way to measure time execution in .NET.
+
+
+
+## Examples
+
+Here is a simple usecase.
+
+```
+var watch = System.Diagnostics.Stopwatch.StartNew();
+// the code that you want to measure comes here
+watch.Stop();
+var elapsedMs = watch.ElapsedMilliseconds;
+```
+
+Do not use DateTimes to measure time execution in .NET.
+
+“It is worth mentioning that DateTime.Now often is quite a bit slower than DateTime.UtcNow due to the work that has to be done with timezones, DST and such.
+
+DateTime.UtcNow typically has a resolution of 15 ms. See John Chapman’s blog post about DateTime.Now precision for a great summary.”
+
+You can also check multiples times before you stop the watcher.
+
+```
+long step1ElapsedMilliseconds;
+long step2ElapsedMilliseconds;
+var watch = System.Diagnostics.Stopwatch.StartNew();
+ 
+// the code that you want to measure comes here 1/2
+step1ElapsedMilliseconds = watch.ElapsedMilliseconds;
+ 
+// the code that you want to measure comes here 2/2
+step2ElapsedMilliseconds = watch.ElapsedMilliseconds;
+ 
+watch.Stop();
+Debug.Log("Execution time for step 1 in m: "
+    + step1ElapsedMilliseconds );
+Debug.Log("Execution time for step 2 in m: "
+    + (step2ElapsedMilliseconds - step1ElapsedMilliseconds) );
+Debug.Log("Total Execution time in ms: "
+    + watch.ElapsedMilliseconds);
+```
+
+## Source
+
+[https://github.com/DamienFremont/blog/tree/master/20170919-c-sharp-calculate-execution-time](https://github.com/DamienFremont/blog/tree/master/20170919-c-sharp-calculate-execution-time)
+https://github.com/DamienFremont/blog/tree/master/20170919-c-sharp-calculate-execution-time
+
+## References
+
+[https://stackoverflow.com/questions/14019510/calculate-the-execution-time-of-a-method](https://stackoverflow.com/questions/14019510/calculate-the-execution-time-of-a-method)
+https://stackoverflow.com/questions/14019510/calculate-the-execution-time-of-a-method
+
+
+## Origin
+[https://damienfremont.com/2017/09/19/c-sharp-calculate-execution-time/](https://damienfremont.com/2017/09/19/c-sharp-calculate-execution-time/)
+