C#

public interface ICalculatable
{
    DateTime FirstPaymentDate { get; }
    decimal MonthlyCompoundingRate { get; }
}

public interface IBaseObject : ICalculatable
{
    string Identifier { get; }
    new DateTime FirstPaymentDate { get; set; }
    decimal InterestRate { get; set; }
}

Ware@Work wrote:

the FirstPaymentDate properties should be the same value/source.

led mike wrote:

Perhaps reading Allen Holub discuss why Getters and Setters are Evil[^] will help you.

Ware@Work wrote:

How do I define IBaseObject to imply that the FirstPaymentDate property is the same in both the IBaseObject definition and the ICalculatable definition?

public class BaseObject : IBaseObject
{

    #region IBaseObject Members

    public string Identifier
    {
        get { throw new NotImplementedException(); }
    }

    public DateTime FirstPaymentDate
    {
        get
        {
            throw new NotImplementedException();
        }
        set
        {
            throw new NotImplementedException();
        }
    }

    public decimal InterestRate
    {
        get
        {
            throw new NotImplementedException();
        }
        set
        {
            throw new NotImplementedException();
        }
    }

    #endregion

    #region ICalculatable Members


    public decimal MonthlyCompoundingRate
    {
        get { throw new NotImplementedException(); }
    }

    #endregion
}

class Program
   {
       static void Main(string[] args)
       {
           Three inst = new Three();

           inst.Name = "Hello"; // has get and set

           IOne foo = new Three();
           //foo.Name = "Hello" // Readonly only

           ITwo bar = new Three();
           bar.Name = "Hello"; //has get and set
       }
   }


       public interface IOne
       {
           string Name { get; }
       }
       public interface ITwo : IOne
       {
           new string Name { get;set;  }
       }

       public class Three : ITwo
       {
           private string _name;
           #region ITwo Members

           public string Name
           {
               get
               {
                   return _name;
               }
               set
               {
                   _name = value;
               }
           }

           #endregion
       }

static string _image_path;
public static string Image_Path
{
get { return _image_path; }
set { _image_path = value; }
}

Paw Jershauge wrote:

if you dont get, what im trying to point out here.