Language Basics C# Book

When reference an index behind the length of an array C# generates and throws IndexOfOfRange exception.
The following code generates the IndexOutOfRange exception.
using System;
class Program
{
static void Main(string[] args)
{
int[] intArray = new int[3];
Console.WriteLine(intArray[10]);
}
}
The output:
Unhandled Exception: System.IndexOutOfRangeException: Index was outside the bounds of the array.
at Program.Main(String[] args)