C# Jagged Array

The C# Jagged is an array whose elements are also an array, i.e., it is an array of arrays. These elements inside a jagged array can be of different dimensions and even can be of different sizes.

A Jagged array in C# can be declared and initialized as follows:

Int[][] JaggedAr = new int[2][];

Here size 2 represents the number of arrays, i.e., two in JaggedAr[][].

We have to initialize the arrays inside before using the C# Jagged.

JaggedAr[0] = new int[]{5,9,6};

JaggedAr[1] = new int[]{2,5};

Let us see an example code demonstrating Jagged arrays.

C# Jagged Array Example

The below-shown example explains to you the declaration and use of the Jagged Array.

using System;
 class program
     public static void Main()
         string[] NameOfEmployee = new string[2];
         NameOfEmployee[0] = "John";
         NameOfEmployee[1] = "Winson";

         string[][] JaggedAr = new string[2][];
         JaggedAr[0] = new string[] { "Bachelors", "masters", "Doctrate" };
         JaggedAr[1] = new string[] { "Bachelors", "Masters" };
         for(int i = 0;i<JaggedAr.Length;i++  )
             string[] arrayin = JaggedAr[i];
             for(int j = 0; j< arrayin.Length;j++)

C# Jagged Array 1


NameOfEmployee[] is a string array in which there are two elements.

JaggedAr[][] is the C# jagged array having two string arrays.

JaggedAr[0] has three elements —— Bachelors, masters, and Doctorate.

JaggedAr[1] has two elements in it —– Bachelors, Masters.

Since JaggedAr.Length is 2, When i = 0, 0<2 condition returns true. So, the control enters the parent loop and prints NameOfEmployye[0], which is.


Now JaggedAr[0] is stored in arrayin[]

When j=0, j<arrayin.Length, i.e., 0<3 since JaggedAr[0] is having three elements.

0<3 returns true. So, C# prints Bachelors.

Again j++, i.e., 1

Now, 1 < 3 returns true. So, it prints Masters

Again j++, i.e., 2

Next, 2 < 3 returns true, and It prints Doctorate.

Again j++, i.e., 3

Now, 3 < 3 returns false come out of the child loop.

Now Console.WriteLine() is executed.

Again C# Jagged Array increments i in the parent loop. This time i=1, so 1<2 returns true. Thus enters the loop and prints NameOfEmployee[1], i.e.,


arrayin = JaggedAr[1]

j=0 and j<arrayin.Length, which is 2, and it returns true. So, the control enters the child loop and prints arrayin[0]


j++ = 1 and 1<2 returns true. Enters the child loop and prints arrayin[1], i.e.,


j++ = 2 and 2<2 returns false. So, it comes out of the child loop and executes.


Now increments I by 1 so i++ = 2

2<2 returns false, so it comes out of the parent loop.

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.