C# Basic - Using Array in C#

C# Basic – Array Tuturials

In C#, an array starts at zero.. ( Arrays can be divided into four categories. These categories are single-dimensional arrays, multidimensional arrays or rectangular arrays, jagged arrays, and mixed arrays.

Single-dimensional Arrays
Single-dimensional arrays are the simplest form of arrays. These types of arrays are used to store number of items of a predefined type. All items in a single dimension array are stored in a row starting from 0 to the size of array –1.
int [] intArray;intArray = new int[5];
nt [] intArray;intArray = new int[3] {0, 1, 2};
string[] strArray = new string[5] {"Ronnie", "Jack", "Lori", “Max”, “Tricky”};
string[] strArray = {"Ronnie", "Jack", "Lori", “Max”, “Tricky”};
string[] strArray = new string[] {"Ronnie", "Jack", "Lori", “Max”, “Tricky”};

Multi-dimensional Arrays
A multidimensional array is an array with more than one dimension.

string[,] strArray;
int[,] numbers = new int[3, 2] { {1, 2}, {3, 4}, {5, 6} };
string[,] names = new string[2, 2] { {"Rosy","Amy"}, {"Peter","Albert"} };
int[,] numbers = new int[,] { {1, 2}, {3, 4}, {5, 6} };
string[,] names = new string[,] { {"Rosy","Amy"}, {"Peter","Albert"} };
int[,] numbers = { {1, 2}, {3, 4}, {5, 6} };
string[,] siblings = { {"Rosy", "Amy"}, {"Peter", "Albert"} };

Jagged Arrays
Jagged arrays are often called array of arrays. An element of a jagged array itself is an array. For example, you can define an array of names of students of a class where a name itself can be an array of three strings – first name, middle name and last name. Another example of jagged arrays is an array of integers containing another array of integers. For example,
int[][] numArray = new int[][] { new int[] {1,3,5}, new int[] {2,4,6,8,10} };

Again, you can specify the size when you call the new operator.

Mixed Arrays or Rectangular Arrays
Mixed arrays are a combination of multi-dimension arrays and jagged arrays. Multi-dimension arrays are also called as rectangular arrays.

More Informations

Programming C#: Working with Arrays
http://www.c-sharpcorner.com/Code/2002/July/WorkingWithArrays.asp
Array Class
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemarrayclasstopic.asp
Array Members
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemarrayclasstopic.asp
Array Properties
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemarrayclasstopic.asp
Array Methods
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemarrayclasstopic.asp