Arrays In C#

An array stores a fixed-size sequential collection of elements of the same type. We can use them to gather items in a single group, and perform various operations on them.

Arrays are of the following three types in C#.

1. One Dimensional Array
   
   Syntax:
   
   DataType[] NameOfArray = new DataType[Number of Elements(Size)];
   
   For Example:
   
   1. Int[] Arr = new int[5];
   In the above example we have created one dimension array of Type int and having size 5.
   
   
2. Two Dimensional Array
   
   Syntax:
   
   DataType[,] NameOfArray = new DataType[Sze of Rows, Size of Column];
   
   For Example:
   
   1. Int[,] Arr = new int[5,5];
   In the above example we have created one dimension array of Type Integer.
   
   Two Dimensional means the array will look like a table with fixed numbers of rows and columns declared in syntax.
   
   
3. Jagged Array
   
   Syntax:
   
   DataType[][] NameOfArray = new DataType[Number of Elements(Size)][];
   
   For Example:
   
   1. Int[][] Arr = new int[5][];
   Jagged Arrays are basically collection of arrays. In the case of jagged array every Element of an array contains array.

Advantages

There are some advantages of using Arrays.

• We can create an array instead of creating multiple Variable for the same Memory Location.
• We can store n-numbers of elements in an array.
• Elements of an array are stored with the sequential index order so, it is easy to find any element with their index number directly.

Drawback

• Size (numbers of elements to be stored) is fixed at Compile Time or at the time of initialization of it.

This is the basic concept of creating arrays in C#. You will get the process to insert/select the element using loops and index in an array in my next blog.