public List <Student> GetNotEnroled(Guid idEnvironment)
{
List <Student> students = new List <Student>();
var environment = _environmentRepository.GetEnvironmentByIdIncludeDependencys(idEnvironment);
environment.Students.ForEach(student =>
{
if (environment.CulturalExchange.FirstOrDefault(culturalExchange => culturalExchange.StudentId == student.Id) == null)
{
students.Add(student);
}
});
return(students);
}