using System;

public class Program

{

    public static void Main()

    {

            Console.WriteLine("\n");

            MultiUseDependencies mud = new MultiUseDependencies();

            mud.Update();

​

            Console.WriteLine("\n");

            MultiUseDependencies2 mudRefactored = new MultiUseDependencies2(new Audit2());

            mudRefactored.Update();

​

    }

}

​

    public class MultiUseDependencies

    {

        public MultiUseDependencies()

        {

​

        }

​

        public void Update()

        {

            Audit a = new Audit();

            a.preAuditValues = "Update";

​

            // if data already exists, delete it

            this.Delete();

​

            // Update values, implementation not important

​

            // Audit changes to the data

            a.AuditInformation();

        }

​

        public void Delete()

        {

            Audit a = new Audit();

            a.preAuditValues = "Delete";

​

            // Delete data, implementation omitted.

​

            a.AuditInformation();

        }

    }

​

    public class Audit

    {

        public string preAuditValues { get; set; }

​

        public void AuditInformation()

        {

            Console.WriteLine("Audited {0}", preAuditValues);

        }

    }

​

    public class MultiUseDependencies2

    {

​

        private readonly IAudit _audit;

​

        public MultiUseDependencies2(IAudit audit)

        {

            _audit = audit;

        }

​

        public void Update()

        {

            _audit.preAuditValues = "Update";

​

            // if data already exists, delete it

            this.Delete();

​

            // Update values, implementation not important

​

            // Audit changes to the data

            _audit.AuditInformation();

        }

​

        public void Delete()

        {

            _audit.preAuditValues = "Delete";

​

            // Delete data, implementation omitted.

​

            _audit.AuditInformation();

        }

    }

​

    public interface IAudit

    {

        string preAuditValues { get; set; }

        void AuditInformation();

    }

​

    public class Audit2 : IAudit

    {

        public string preAuditValues { get; set; }

​

        public void AuditInformation()

        {

            Console.WriteLine("Audited {0}", preAuditValues);

        }

    }

​