Static fields methods properties

Context: Static members are shared across all instances of a class. They are accessed using the class name, not an instance.

Static Field

public class Counter
{
    public static int Count = 0;
    public Counter() => Count++;
}
Counter c1 = new Counter();
Counter c2 = new Counter();
Console.WriteLine(Counter.Count); // 2

Static Method

public class MathHelper
{
    public static int Square(int x) => x * x;
}
int result = MathHelper.Square(5);

Static Property

public class AppConfig
{
    public static string Environment { get; set; } = "Development";
}

Static Constructor

Called once before any static member is accessed.

public class Database
{
    static Database() => Console.WriteLine("Initialized");
}