private void bindTreeView(RadTreeView rtrDepartment)
{
// ---- BIND DU LIEU VAO LISTVIEW --
cls_DepartmentInformation dInfor = new cls_DepartmentInformation();
dInfor.CompanyId = 1;
DataTable dtDepart = dInfor.SelectForSalary();
ViewState["DT_DEPARTMENT"] = dtDepart;
//int countDepartment = dtDepart.Rows.Count;
//ShowDSTreeview(0, rtrDepartment);
RadTreeNode node = new RadTreeNode();
node.Text = "--- Lựa chọn ---";
node.Value = "0";
rtrDepartment.Nodes.Add(node);
addNodeTreeView("0", node, dtDepart);
}