semesterWork/data/Repository/SQLPresenceRepository.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Data.DAO;
using Microsoft.EntityFrameworkCore;

namespace data.Repository
{
    public class SQLPresenceRepository
    {
        private readonly RemoteDatabaseContext _dbContext;

        public SQLPresenceRepository(RemoteDatabaseContext remoteDatabaseContext)
        {
            _dbContext = remoteDatabaseContext; 
        }

        public IEnumerable<Attendance> GetAllPresences()
        {
            var result = _dbContext.Attendances
                .Include(attendance => attendance.GroupSubject)
                .ThenInclude(groupSubject => groupSubject.Subject)
                .Include(groupSubject => groupSubject.GroupSubject.Semester)
                .Include(attendance => attendance.Student)
                .Include(attendance => attendance.Group)
                .Include(attendance => attendance.Visit);

            return result;

        }
    }
}