Question

I am trying to implement an interface class, that contains a list of objects. How can I make the list generic, so that the implementing class defines the type of list:

public interface IEntity {     Guid EntityID { get; set; }     Guid ParentEntityID{ get; set; }     Guid RoleId { get; set; }      void SetFromEntity();     void Save();     bool Validate();     IQueryable<T> GetAll(); // That is what I would like to do     List<Guid> Search(string searchQuery); } public class Dealer : IEntity {    public IQueryable<Dealer> GetAll() { } } 

Answer 1

You can do something like this:

public interface IEntity<T> {     IQueryable<T> GetAll(); }  public class Dealer : IEntity<Dealer> {    public IQueryable<Dealer> GetAll() { } }