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Arrays and Collections

In .NET, arrays and collections are used to store multiple values in a single variable. They provide a convenient way to work with groups of related data.

Arrays

An array is a fixed-size collection of elements of the same type. It allows you to store and access multiple values using a single variable. The elements in an array are accessed by their index, which starts at 0.

Here's an example of initializing and accessing elements in an array:

TEXT/X-CSHARP

1string[] names = { "Alice", "Bob", "Charlie", "Dave" };
2
3Console.WriteLine(names[0]); // Output: Alice
4Console.WriteLine(names[2]); // Output: Charlie

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using System;
​
class Program
{
    static void Main()
    {
        // Arrays
        string[] names = { "Alice", "Bob", "Charlie", "Dave" };
        Console.WriteLine("Names:");
        foreach (string name in names)
        {
            Console.WriteLine(name);
        }
​
        // Collections
        List<int> numbers = new List<int>() { 1, 2, 3, 4, 5 };
        Console.WriteLine("Numbers:");
        foreach (int number in numbers)
        {
            Console.WriteLine(number);
        }
    }
}

Arrays and Collections

Arrays

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