C# Language Underlying references of named method delegates


Example

When assigning named methods to delegates, they will refer to the same underlying object if:

  • They are the same instance method, on the same instance of a class

  • They are the same static method on a class

    public class Greeter
    {
        public void WriteInstance()
        {
            Console.WriteLine("Instance");
        }
    
        public static void WriteStatic()
        {
            Console.WriteLine("Static");
        }
    }
    
    // ...
    
    Greeter greeter1 = new Greeter();
    Greeter greeter2 = new Greeter();
    
    Action instance1 = greeter1.WriteInstance;
    Action instance2 = greeter2.WriteInstance;
    Action instance1Again = greeter1.WriteInstance;
    
    Console.WriteLine(instance1.Equals(instance2)); // False
    Console.WriteLine(instance1.Equals(instance1Again)); // True
    
    Action @static = Greeter.WriteStatic;
    Action staticAgain = Greeter.WriteStatic;
    
    Console.WriteLine(@static.Equals(staticAgain)); // True