How to delete/remove an element from a C# array?

To delete an elements from a C# array, we will shift the elements from the position the user want the element to delete.

Here, first we have 5 elements −

int[] arr = new int[5] {35, 50, 55, 77, 98};

Now let’s say we need to delete the element at 2nd position i.e. variable “pos = 2” is set, for that shift the elements after the specified position −

// Shifting elements
for (i = pos-1; i < 4; i++) {
   arr[i] = arr[i + 1];
}

Now display the result as shown in the complete code below.

Example

 Live Demo

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Demo {
   class Program {
      static void Main() {
         int i = 0;
         int pos;
         int[] arr = new int[5] {35, 50, 55, 77, 98};

         Console.WriteLine("Elements before deletion:");
         for (i = 0; i < 5; i++) {
            Console.WriteLine("Element[" + (i) + "]: "+arr[i]);
         }

         // Let's say the position to delete the item is 2 i.e. arr[1]
         pos = 2;
         // Shifting elements
         for (i = pos-1; i < 4; i++) {
            arr[i] = arr[i + 1];
         }
         Console.WriteLine("Elements after deletion: ");
         for (i = 0; i < 4; i++) {
            Console.WriteLine("Element[" + (i + 1) + "]: "+arr[i]);
         }
         Console.WriteLine();
      }
   }
}

Output

Elements before deletion:
Element[0]: 35
Element[1]: 50
Element[2]: 55
Element[3]: 77
Element[4]: 98
Elements after deletion:
Element[1]: 35
Element[2]: 55
Element[3]: 77
Element[4]: 98

Chandu yadav

Published on 10-Aug-2018 10:23:38