Demo delegate + lambda c#

KCallback.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProtoLambdaCSharp
{
    public delegate void KCallback(object p);
    public delegate void Runner();

    public class KExtCallback {
        public readonly Runner _run1;
        public readonly Runner _run2;

        public KExtCallback(Runner run1, Runner run2)
        {
            this._run1 = run1;
            this._run2 = run2;
        }
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProtoLambdaCSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            var s = new Service();

            KCallback cb = (p) => Console.WriteLine(p.ToString());
            s.executeCallback(cb);

            int i = 0;

            Runner run1 = () =>
            {
                i = i + 1;
                Console.WriteLine("Hello " + i);
            };
            Runner run2 = () =>
            {
                i = i + 2;
                Console.WriteLine("world " + i);
            };
            KExtCallback ecb = new KExtCallback(run1, run2);
            s.executeKExtCallback(ecb);
        }
    }
}

Service.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProtoLambdaCSharp
{
    class Service
    {
        internal void executeCallback(KCallback cb)
        {
            cb("Called");
        }

        internal void executeKExtCallback(KExtCallback ecb)
        {
            ecb._run1();
            ecb._run2();
        }
    }
}