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C# - ArrayList.Remove() Method with Example

C# ArrayList.Remove() Method: Here, we are going to learn how to remove the first occurrence of a specific object from the ArrayList in C#.Net? By Nidhi Last updated : April 03, 2023

ArrayList.Remove() Method

The ArrayList.Remove() method is used to remove the first occurrence of the given object from the ArrayList.

Syntax

void ArrayList.Remove(object item);

Parameter(s)

• item: An object to be deleted from the ArrayList.

Return Value

It does not return any value.

Exception(s)

• System.NotSupportedException

C# program to remove the first occurrence of a specific object from the ArrayList

The source code to remove the first occurrence of a specific object from the ArrayList is given below. The given program is compiled and executed successfully.

using System;
using System.Collections;

namespace mynamespace {
  class Program {
    //Entry point of program
    static void Main(string[] args) {
      ArrayList List = new ArrayList();

      List.Add("ABC");
      List.Add("XYZ");
      List.Add("PQR");

      List.Add(1.15);
      List.Add(2.25);
      List.Add(3.35);
      List.Add(4.45);
      List.Add(5.55);

      object[] objArray1 = List.ToArray();

      Console.WriteLine("Values in array list before Remove");
      foreach(object val in objArray1) {
        Console.WriteLine(val);
      }

      List.Remove("XYZ");

      object[] objArray2 = List.ToArray();

      Console.WriteLine("\n\nValues in array list after remove");
      foreach(object val in objArray2) {
        Console.WriteLine(val);
      }
    }
  }
}

Output

Values in array list before Remove
ABC
XYZ
PQR
1.15
2.25
3.35
4.45
5.55


Values in array list after remove
ABC
PQR
1.15
2.25
3.35
4.45
5.55
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