Question

I am trying to Implement a Generic Repository with Linq To SQL. My problem lies in that some of my underlying tables have int ID’s and some Guid ID’s. How would I account for that?

public T GetById(int id)
{
    return this._context.GetTable<T>().Single(x => x.ID.Equals(id));
}

Answer 1

Add another generic parameter to the repository interface.

public interface IRepo<TType, PKType>
{
    TType GetById(PKType id);
}

Then implement it.

public class CustomerRepo : IRepo<Customer, Guid>
{
    public Customer GetById(Guid id)
    {
        // code to get from repo
    }
}