public void loadListUsers(TreeListNode node)
{
if (node != null)
{
NAS.DAL.Nomenclature.Organization.Department selectedDP = (NAS.DAL.Nomenclature.Organization.Department)node.DataItem;
DepartmentBO bo = new DepartmentBO();
List <Person> LoginPersonLST = bo.getAllPeopleInDepartments(session, selectedDP);
grd_ListUser.DataSource = LoginPersonLST;
grd_ListUser.DataBind();
}
}