private void treeGroupUser_RowCellClick(object sender, DevExpress.XtraTreeList.RowCellClickEventArgs e)
{
var pra = e.Node.ParentNode; // lấy node cha
string namePraNode;
if (pra == null)
{
namePraNode = e.Node.GetValue(0).ToString();
}
else
{
namePraNode = pra.GetValue(0).ToString();
}
List <GroupUser> listGroup = grUserBUS.getGroupUserFromName(namePraNode);
listUser = user_BUS.GetUserGroup(listGroup[0].GR_ID, listGroup[0].Group_Name);
gridGroupUser.DataSource = listGroup;
}