gistfile1.txt

public class MainEntryPointClass : BaseClass
{
  private ILogic Logic;
  public MainEntryPointClass(ILogic Logic)
  {
    this.Logic = Logic;
  }

  public MainEntryPointClass () : this(new Logic())
  {
  }
  
  public SetupProperties()
  {
     this.ConfigProperties.Add(typeof(string), "DirectoryPath", "C:\\");
  }

  public Run()
  {
    //Set some properties on Logic by reading this.ConfigProperties. This is the first time ConfigProperties can be read.

   Logic.ITimer = new Timer();
   Logic.IFileLogger = new FileLogger(this.ConfigProperties.Find("DirectoryPath").Value());

    Logic.RandomProperty = this.ConfigProperties.Find(..).Value();
  }
}

public class Logic : ILogic
{
   public ITimer Timer{get;set;}
   public ILogger Logger{get;set;}

   public class Logic()
   {
       
   }

   public SomeMethod()
   {
      this.Logger.Write("Data");  /******* How does DirectoryPath get assigned? *******/
   }
}

public interface IFileLogger
{
    void WriteData(string Data);        
}

 public class FileLogger : IFileLogger
{
    public FileLogger(string Directory)
   {
     this.DirectoryPath = Directory;
    }

    public void WriteData(string Data)
    {
    }

    public string DirectoryPath { get; private set; }
}