void m_cmd_thuc_thu_nv_ItemClick(object sender, ItemClickEventArgs e) { try { f490_bc_thuc_thu_theo_nv v_frm = new f490_bc_thuc_thu_theo_nv(); if (IsExistFormName(v_frm)) return; v_frm.MdiParent = this; v_frm.Show(); } catch (Exception v_e) { CSystemLog_301.ExceptionHandle(v_e); } }