Array is a strongly type collection int[] numbers = new int[5] {1, 2, 3, 4, 5};

C# arrays are zero indexed; that is, the array indexes start at zero. Arrays in C# work similarly to how arrays work in most other popular languages. There are, however, a few differences that you should be aware of. The size of the array is not part of its type as it is in the C language. In C#, arrays are actually objects. System.Array is the abstract base type of all array types. You can use the properties, and other class members, that System.Array has.