void m_cmd_card_nhan_vien_ItemClick(object sender, ItemClickEventArgs e) { try { f315_card_nhan_vien v_frm = new f315_card_nhan_vien(); if(IsExistFormName(v_frm)) return; v_frm.MdiParent = this; v_frm.Show(); } catch(Exception v_e) { CSystemLog_301.ExceptionHandle(v_e); } }