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C# Arrays

In C#, an array is a collection of objects or types, the elements of the array can be of any type, including other array types. An array can be Single-Dimensional, Multidimensional.

To declare an array, define the variable type with square brackets:

string[] fruits;

Example creating an array in C#

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      string[] fruits = {"Orange", "Banana", "Apple"};    
    }
  }
}

How to access an element in a C# array?

You access an array element by referring to the index number.

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      string[] fruits = {"Orange", "Banana", "Apple"};   
      Console.WriteLine(fruits[0]); 
    }
  }
}

Output

Orange


How to change an element in a C# array?

You can change an array element by referring to the index number same way you access it.

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      string[] fruits = {"Orange", "Banana", "Apple"};   
      fruits[0] = "Pineapple";
      Console.WriteLine(fruits[0]); 
    }
  }
}

Output

Pineapple


How to get the size of and array in C#?

You can get the size and length of an array by using the property: Length

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      string[] fruits = {"Orange", "Banana", "Apple"};   
      Console.WriteLine(fruits.Length); 
    }
  }
}

Output

3

Conclusion

In this page (written and validated by ) you learned about C# Arrays . What's Next? If you are interested in completing CS tutorial, your next topic will be learning about: CS Sort Array.



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