C# Remove item from List

  1. C# Program to Remove Item from List Using Remove() Method
  2. C# Program to Remove Item from List Using RemoveAt() Method
  3. C# Program to Remove Item from List Using RemoveRange() Method

In C# we can perform several operations on the List data structure. The items can be added, removed, replaced, etc. To remove an item from List in C# we use Remove(), RemoveAt() and RemoveRange() methods.

These methods remove the item from List based on either its index or value. In the next few examples, you’ll learn how to implement these.

C# Program to Remove Item from List Using Remove() Method

This Remove() method removes items based on its name on the List. The correct syntax to use this method is as follows:

ListName.Remove("NameOfItemInList");

Example Codes:

using System;
using System.Collections.Generic;

public class Removal
{
    public static void Main()
    {
      List<string> Flowers = new List<string>();
      Flowers.Add("Rose");
      Flowers.Add("Jasmine");
      Flowers.Add("Lili");
      Flowers.Add("Hibiscus");
      Flowers.Add("Daisy");
      Console.WriteLine("List Before Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
      Console.WriteLine();
      //Use of Remove() method
      Flowers.Remove("Lili");
      Console.WriteLine("List After Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
    }
}

Output:

List Before Removal:
Rose
Jasmine
Lili
Hibiscus
Daisy

List After Removal:
Rose
Jasmine
Hibiscus
Daisy

C# Program to Remove Item from List Using RemoveAt() Method

RemoveAt() method removes the item from List based on the index number of that item. We already know that indexes in C# start with 0. So, be careful while selecting the index number. The correct syntax to use this method is as follows:

ListName.RemoveAt(Index);

Example Codes:

using System;
using System.Collections.Generic;

public class Removal
{
    public static void Main()
    {
      List<string> Flowers = new List<string>();
      Flowers.Add("Rose");
      Flowers.Add("Jasmine");
      Flowers.Add("Lili");
      Flowers.Add("Hibiscus");
      Flowers.Add("Daisy");
      Console.WriteLine("List Before Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
      Console.WriteLine();
        //Use of RemoveAt() method
      Flowers.RemoveAt(3);
      Console.WriteLine("List After Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
    }
}

Output:

List Before Removal:
Rose
Jasmine
Lili
Hibiscus
Daisy

List After Removal:
Rose
Jasmine
Lili
Daisy

C# Program to Remove Item from List Using RemoveRange() Method

In C#, we can also remove multiple items at the same time. For this purpose RemoveRange() method is used. We pass the range of items to be removed as a parameter to the method. The correct syntax to use this method is as follows:

ListName.RemoveRange(int index, int count);

index is the starting index of the elements to be removed, and count is the number of elements to be removed.

Example Codes:

using System;
using System.Collections.Generic;

public class Removal
{
    public static void Main()
    {
      List<string> Flowers = new List<string>();
      Flowers.Add("Rose");
      Flowers.Add("Jasmine");
      Flowers.Add("Lili");
      Flowers.Add("Hibiscus");
      Flowers.Add("Daisy");
      Console.WriteLine("List Before Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
      Console.WriteLine();
        //Use of RemoveRange() method
      Flowers.RemoveRange(3, 2);
      Console.WriteLine("List After Removal:");
      foreach( string flower in Flowers)
      {
        Console.WriteLine(flower);
      }
    }
}

Output:

List Before Removal:
Rose
Jasmine
Lili
Hibiscus
Daisy

List After Removal:
Rose
Jasmine
Lili

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