C# Hides Inherited Member

Question

I have this setup and get a compiler warning "... hides inherited member ...". How do I fix?

public interface IRepository<T> where T : class
{
    IQueryable<T> GetAll();
    T GetById(int id);
}

public class EFRepository<T> : IRepository<T> where T : class
{
    public EFRepository(DbContext dbContext)
    {
        if (dbContext == null)
            throw new ArgumentNullException("dbContext");
        DbContext = dbContext;
        DbSet = DbContext.Set<T>();
    }

    protected DbContext DbContext { get; set; }

    protected DbSet<T> DbSet { get; set; }

    public virtual IQueryable<T> GetAll()
    {
        return DbSet;
    }

    public virtual T GetById(int id)
    {
        return DbSet.Find(id);
    }

}

public interface IProductRepository : IRepository<Product>
{
    // Product specific interface code here
}

public class ProductRepository : EFRepository<Product>, IProductRepository
{
    public ProductRepository(DbContext context) : base(context) { }

    public IQueryable<Product> GetAll()
    {
        return DbSet.Include("Table1").Include("Table2").AsQueryable();
    }
}

I get the compiler warning message but when running application, I get a StackOverflowException error. Adding the new keyword still generates the StackOverflowException error. Override keyword doesn't work. If I comment out the ProductRepository GetAll() method, all is fine and dandy. But I need to override the GetAll() method.

Thanks.

Solution

Mark ProductRepository.GetAll with the "new" keyword:

public new IQueryable<Product> GetAll()
{
    return DbSet.Include("Table1").Include("Table2").AsQueryable();
}

This will hide the method EFRepository.GetAll().

You can also choose to override the base method, if you want both methods to return the same result:

public override IQueryable<Product> GetAll()
{
    return DbSet.Include("Table1").Include("Table2").AsQueryable();
}