public static string AddNewAddressToEmployee(SoftUniContext context) { var newAddress = new Address { AddressText = "Vitoshka 15", TownId = 4 }; var nakov = context.Employees.FirstOrDefault(x => x.LastName == "Nakov"); nakov.Address = newAddress; context.Add(newAddress); context.Update(nakov); context.SaveChanges(); var employeesAddresses = context .Employees .OrderByDescending(x => x.AddressId) .Take(10) .Select(e => e.Address.AddressText) .ToList(); var sb = new StringBuilder(); foreach (var address in employeesAddresses) { sb.AppendLine(address); } var result = sb.ToString().Trim(); return(result); }