how to get the length of a array in C# code example

Example 1: length of arr c#

string[] arr = {"foo", "bar"}
Console.WriteLine(arr.Length);
// >> 2

Example 2: how to declare an array lenght in c#

public int[] number = new int[2 /* the number here declares the lenght, not the index*/ ];
    int[1 /*this number here declares the index*/] = 69;