How Can I Precisely Measure Method Execution Time in .NET?

Accurate calculation of .NET method execution time

Introduction:

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

Best method: 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:

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

Avoid using DateTime:

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

High precision option: Performance counters

If extremely high accuracy is required, you can use the performance counters built into the operating system. However, this approach is complex and platform dependent.

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