.NET method execution time accurate calculation

introduction:

Determining the execution time of the method is critical for performance optimization. There are a variety of ways to measure this metric, each with its advantages and disadvantages.

Best way: Stopwatch

The Stopwatch function in .NET is specifically used to measure execution time and is considered the most accurate and direct method. How to use it is as follows:

var watch = System.Diagnostics.Stopwatch.StartNew();
// 在此处执行要测量的代码
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;

Avoid using DateTime:

While DateTime can measure time, it is not recommended to use it for precise execution time calculations in .NET.

High Precision Options: Performance Counter

If extremely high accuracy is required, you can use the performance counter built into the operating system. However, this approach is more complex and relies on the platform.