public Department()
{
this._Departments = new EntitySet<Department>(new Action<Department>(this.attach_Departments), new Action<Department>(this.detach_Departments));
this._PlanStaffs = new EntitySet<PlanStaff>(new Action<PlanStaff>(this.attach_PlanStaffs), new Action<PlanStaff>(this.detach_PlanStaffs));
this._DepartmentType = default(EntityRef<DepartmentType>);
this._Department1 = default(EntityRef<Department>);
this._PlanStaff = default(EntityRef<PlanStaff>);
OnCreated();
}