How to prevent IndexOutOfRangeException exception

What is the Index Out of Range Exception?

If we initialize the array size and print the value greater than the array size.  For example, we initialize the array size 5 and we print the values of 6 index that time array shows Index Out of Range Exception.

This is the code for preventing Index Out of Range Exceptions.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Indexoutofrangeexception
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[] arr = { 1, 2, 3, 4, 5};
            for (int i = 0; i <= arr.Length; i++)
            {
                Console.WriteLine(arr[i]);
            }
            Console.ReadLine();
         }
    }
}

 Output

How to handle this exception

This is the solution to handle the Index Out of Range Exception.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Indexoutofrangeexception
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[] arr = { 1, 2, 3, 4, 5};
           
              try
            {
                for (int i = 0; i <= arr.Length; i++)
                {
                    Console.WriteLine(arr[i]);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.ReadLine();
            
        }
    }
}

 output

This is the error was occurred by your index query exceed the total index array. You can prevent it by this way

1. if(currentIndex < array.Count()){  
2. // Continue do something  
3. }  

Take care of your index and size of the collection while iterating and also handle exception properly.