C# Lists

• Adding Elements:

numbers.Add(10);
numbers.Add(20);
numbers.Add(30);

⤏ Add elements to a list using the 'Add()' method.

• Accessing Elements:

int firstElement = numbers[0]; // Accessing the first element

⤏ Access elements by index using the bracket notation.

• Removing Elements:

numbers.Remove(20); // Remove by value
numbers.RemoveAt(0); // Remove by index

⤏ Remove elements by value or index using methods like 'Remove()' or 'RemoveAt()'.

• Iterating through a List:

foreach (var number in numbers)
{
    Console.WriteLine(number);
}

⤏ Use a loop to iterate through all elements in the list.

• Getting the Count:

int count = numbers.Count;

⤏ Get the number of elements in the list using the 'Count' property.

• Other Operations:

⤏ Lists support various other operations such as sorting ('Sort()'), searching ('Contains()'), copying ('CopyTo()'), and more.

Note: Lists in C# are dynamic, meaning they can grow or shrink in size as needed and they provide flexibility and efficiency in managing collections of elements.

• A simple C# program that demonstrates the use of lists to store and manipulate a collection of integers:

using System;
using System.Collections.Generic;

class Program
{
    static void Main(string[] args)
    {
        // Create a list to store integers
        List＜int> numbers = new List＜int>();

        // Add some numbers to the list
        numbers.Add(10);
        numbers.Add(20);
        numbers.Add(30);

        // Print the elements of the list
        Console.WriteLine("Elements in the list:");
        foreach (var number in numbers)
        {
            Console.WriteLine(number);
        }

        // Remove an element from the list
        numbers.Remove(20);

        // Print the elements of the list after removal
        Console.WriteLine("\nElements in the list after removing 20:");
        foreach (var number in numbers)
        {
            Console.WriteLine(number);
        }

        // Accessing elements by index
        Console.WriteLine("\nAccessing element at index 0: " + numbers[0]);

        // Getting the count of elements in the list
        Console.WriteLine("\nNumber of elements in the list: " + numbers.Count);
    }
}

Elements in the list:
10
20
30

Elements in the list after removing 20:
10
30

Accessing element at index 0: 10       

Number of elements in the list: 2

This program creates a list of integers, adds some numbers to it, removes one element, accesses elements by index, and prints the count of elements in the list.