Unit of Work - All Repositories need to be properties? - .net-core

Question

I am trying to use Repository/UoW Patternin a .net core project . I have looked at many implementations across web . In all the implementations repositories are created as properties in IUnitOfWork.
In Future if we have 50 Repositories we need to have 50 properties in the Unit of Work . Could anyone suggest a better approach for implementing Repository/UoW.
Please Find below the code snippets of approach i have implemented currently.
IUnitOfWork.cs
IStudentRepository Student { get; set; }
IClassRepository Class { get; set; }
void Complete();
UnitOfWOrk.cs
public class unitofwork {
private readonly CollegeContext _context;
IStudentRepository Student { get; set; }
IClassRepository Class { get; set; }
public UnitOfWork(CollegeContext CollegeContext)
{
this._context = CollegeContext;
Student = new StudentRepository(_context);
Class = new ClassRepository(_context);
}
public void Complete()
{
return _context.SaveChanges();
}
}
Student and Class Repositories Inherit From a generic Repository class and IStudentRepository and IClassRepository respectively.
StudentRepository.cs
public class StudentRepository : Repository<Student> , IStudentRepository
{
private readonly CollegeContext context;
private DbSet<Student> entities;
public StudentRepository(CollegeContext context) : base(context)
{
this.context = context;
entities = context.Set<Student>();
}
}

Answer 1

Property-per-Repository is not convenient in some cases as you said. I generally use some sort of factory method in UoW class as below:
public class unitofwork
{
private readonly CollegeContext _context;
IStudentRepository Student { get; set; }
IClassRepository Class { get; set; }
public UnitOfWork(CollegeContext CollegeContext)
{
this._context = CollegeContext;
}
public T CreateRepository<T>() where T : IRepository
{
IRepository repository = null;
if(typeof(T) == typeof(IStudentRepository))
repository = new StudentRepository(_context);
......
......
else
throw new XyzException("Repository type is not handled.");
return (T)repository;
}
public void Complete()
{
return _context.SaveChanges();
}
}
public interface IRepository
{
Guid RepositoryId { get; }
}
My IRepository just hold a simple property. You may extend this interface as per your needs.