Ru.GameSchool.DataLayer.Repository.Course.FixupDepartment C# (CSharp) Méthode

        private void FixupDepartment(Department previousValue)
        {
            if (previousValue != null && previousValue.Courses.Contains(this))
            {
                previousValue.Courses.Remove(this);
            }
    
            if (Department != null)
            {
                if (!Department.Courses.Contains(this))
                {
                    Department.Courses.Add(this);
                }
                if (DepartmentId != Department.DepartmentId)
                {
                    DepartmentId = Department.DepartmentId;
                }
            }
        }