Is there a way to impose some methods to a class without specify the parameters?

I have a class named MANAGER

  public abstract class MANAGER
{


}

Nothing complex :-)

This class have multiple subclasses example AD_MANAGER

  public class AD_MANAGER : MANAGER
{
    #region MEMBRES


    private AD_PROVIDER ad_provider;
    #endregion

    //================================================================================

    #region ACCESSEURS


    public AD_PROVIDER Ad_provider
    {
        get { return ad_provider; }
        set { ad_provider = valu开发者_如何学Goe; }
    }
    #endregion

    //================================================================================

    #region CONSTRUCTORS

    public AD_MANAGER()
    {
        this.ad_provider = new AD_PROVIDER();
    }



    #endregion

    //================================================================================

    #region Public methods

    #region Get

     Stuff Here ..

    #endregion
    #endregion


}

And other ones.. Each Manager "manage" a specific class, named ENTITE. So for AD_MANAGER is used to manage a AD_ENTITE the ENTITE class contains only fields no methods..

So here's my question: How can I specify that every MANAGER class have to implement a method for example isNull() but with parameters of type _ENTITE class related..

So AD_MANAGER Have to implement a bool isnull(AD_ENTITE aENTITE) method, and PERS_MANAGER Have to implement bool isnull(PERS_ENTITE aPERS) method.

With interface you can't declare bool isnull(anytype); So how can I do this such thing?

Thank you for trying to help me!

Create an interface:

public interface IAdManager<T>
{
     bool IsNull(T obj);
}

Then your client classes need to implement IAdManager like:

public class AD_MANAGER : MANAGER, IAdManager<AD_MANAGER>

Yes, generics probably will help.

public abstract class MANAGER<T>
{
    public abstract bool isnull(T item);
}

and

public class AD_MANAGER : MANAGER<Ad_provider>
{
    public override bool isnull(Ad_provider item) {
    }
}

Generics should help you achieve this, I guess!

Can you use two different interfaces IAd_Manager and IPers_Manager?

Or alternatively declare the method as:

bool isnull(T myParam);