Array in ASP.Net C#

An array is a data structure that contains a number of variables of the same type. Arrays are declared with a type:

type[] arrayName;

The following examples create single-dimensional, multidimensional, and jagged arrays:

class TestArraysClass
{
static void Main()
{
// Declare a single-dimensional array
int[] array1 = new int[5];

// Declare and set array element values
int[] array2 = new int[] { 1, 3, 5, 7, 9 };

// Alternative syntax
int[] array3 = { 1, 2, 3, 4, 5, 6 };

// Declare a two dimensional array
int[,] multiDimensionalArray1 = new int[2, 3];

// Declare and set array element values
int[,] multiDimensionalArray2 = { { 1, 2, 3 }, { 4, 5, 6 } };

// Declare a jagged array
int[][] jaggedArray = new int[6][];

// Set the values of the first array in the jagged array structure
jaggedArray[0] = new int[4] { 1, 2, 3, 4 };
}
}

An array has the following properties:
  • An array can be Single-Dimensional, Multidimensional or Jagged.
  • The default value of numeric array elements are set to zero, and reference elements are set to null.
  • A jagged array is an array of arrays, and therefore its elements are reference types and are initialized to null.
  • Arrays are zero indexed: an array with n elements is indexed from 0 to n-1.
  • Array elements can be of any type, including an array type.
  • Array types are reference types derived from the abstract base type Array.
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