How to Measure Execution Time of Code in C#

Introduction

Sometimes you may need to find out how much time a piece of code takes in execution. This is very important when an application is slow. By using this approach, you may find out what code takes how much time.

What this code will do?

Code will measure how much time particular code statements takes to execute.

Implementation

First of all all, import this namespace.

using System.Diagnostics;

 Now we are using StopWatch class to measure the time taken by the code.This is how the UI looks like. Download the attached project. 

Most of the code is commented in this project so you can understand easily.

private void btnGetExecutionTime_Click(object sender, EventArgs e)
        {//First Create the instance of Stopwatch ClassStopwatch sw = new Stopwatch();// Start The StopWatch ...From 000sw.Start();for (int i = 0; i <= 1000; i++)
            {
 
            }//Stop the Timersw.Stop();
 
            
//Writing Execution Time in label string ExecutionTimeTaken = string.Format("Minutes :{0}\nSeconds :{1}\n Mili seconds :{2}",sw.Elapsed.Minutes,sw.Elapsed.Seconds,sw.Elapsed.TotalMilliseconds);
 
            label1.Text = ExecutionTimeTaken;
 
        }

Now whatever code you write between Start and Stop methods, that you can find out using Elapsed. Now, you can use StopWatch to check other code. Just Reset the StopWatch using Reset method.

sw.Reset();

 That's all. enjoy the happy code.

Sample Project Source

Download source files -38 kb