C# - REPLACE ARRAY ELEMENTS

How to change/replace an Item in an Array?

Let us say, we have a Array that contains three names, Mohan, John, Paul, Kriti and Salim.

And we want to replace the name John with a new name Neal.

Example :

public class MyApplication
{
    public static void Main(string[] args)
    {
        string[] arr = {"Mohan", "John", "Paul", "Kriti", "Salim"};

        System.Console.WriteLine("\nBefore replacing the second element\n");
    
    	foreach (string str in arr) 
    	{
            System.Console.WriteLine(str);
        }
        
        arr[1] = "Neal";
    
        System.Console.WriteLine("\nAfter replacing the second element\n");
    
    	foreach (string str in arr) 
    	{
            System.Console.WriteLine(str);
        }
    }    
}

Output :

Before replacing the second element

Mohan
John
Paul
Kriti
Salim

After replacing the second element

Mohan
Neal
Paul
Kriti
Salim

So, in the above code we have created a Array and initialised to the variable x.

string[] arr = {"Mohan", "John", "Paul", "Kriti", "Salim"};

Now, let us see, how the values are positioned in the Array

Now, if we see the above diagram, John resides at position/index 1. So, what we do is, just replace the position/index 1 (i.e. arr[1]) with the new name Neal.

arr[1] = "Neal";

And the name John gets replaced with Neal.

And we get the below output,

Output :

Mohan
Neal
Paul
Kriti
Salim

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