Difference between Array and ArrayList in C#

However, they have significant differences in terms of flexibility, type-safety, and performance.

For example, C# Array:

using System;

class Program
{
    static void Main()
    {
        int[] numbers = { 1, 2, 3, 4, 5 };
        Console.WriteLine(numbers[2]); // Accessing an element in the array
    }
}

For example, C# ArrayList:

using System;
using System.Collections;

class Program
{
    static void Main()
    {
        ArrayList arList = new ArrayList();
        arList.Add(1);
        arList.Add("Two");
        arList.Add(true);        
        Console.WriteLine(arList[1]); // Accessing an element in ArrayList
    }
}

Key Differences:

• Array is fixed in size, ArrayList dynamically resizes.
• Array is type-specific, while ArrayList can hold any data type.
• Array is generally faster and more efficient, while ArrayList offers more flexibility at the cost of performance.