Refactor help DI

CSharp · Console

/Program.cs

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);
        }
    }