public int Create(Course course)
{
this.courses.Add(course);
this.courses.Save();
return course.Id;
}
public void Update(int id, Course course)
{
var entityToUpdate = this.courses.GetById(id);
entityToUpdate.Title = course.Title;
entityToUpdate.Description = course.Description;
entityToUpdate.Images = course.Images;
entityToUpdate.Trainers = course.Trainers;
entityToUpdate.Students = course.Students;
this.courses.Save();
}