C# - Try / catch and application performance

The following test shows you how much the try / catch block cost your application performance. Therefore, please consider carefully every cases you use try / catch.

 using System;  
 using System.Collections.Generic;  
 using System.ComponentModel;  
 using System.Data;  
 using System.Drawing;  
 using System.Linq;  
 using System.Text;  
 using System.Threading.Tasks;  
 using System.Windows.Forms;  
 using System.Diagnostics;  
 namespace TryCatchTest  
 {  
   public partial class Form1 : Form  
   {  
     public Form1()  
     {  
       InitializeComponent();  
     }  
     private void Form1_Load(object sender, EventArgs e)  
     {  
       Stopwatch sw = new Stopwatch();  
       sw.Start();  
       try  
       {  
         int count = 0;  
         for (int i = 0; i < 10000; i++)  
         {  
           count += 1;  
           label1.Text = count.ToString();  
         }  
       }  
       catch(Exception ex)  
       {  
         Console.WriteLine(ex.ToString());  
       }  
       sw.Stop();  
       Console.WriteLine("With try / catch, the elapsed time is: " + sw.ElapsedMilliseconds + " miliseconds");  
       Stopwatch sw2 = new Stopwatch();  
       sw2.Start();  
       int count2 = 0;  
       for (int i = 0; i < 10000; i++)  
       {  
         count2 += 1;  
         label1.Text = count2.ToString();  
       }  
       sw2.Stop();  
       Console.WriteLine("Without try / catch, the elapsed time is: " + sw2.ElapsedMilliseconds + " miliseconds");  
     }  
   }  
 }  

The output in the Console window is as follows:

With try / catch, the elapsed time is: 1364 miliseconds

Without try / catch, the elapsed time is: 1152 miliseconds