private void m_cmd_thong_tin_nhan_vien_ItemClick(object sender, ItemClickEventArgs e) { try { f450_thong_tin_nhan_vien v_f = new f450_thong_tin_nhan_vien(); if(IsExistFormName(v_f)) return; v_f.MdiParent = this; v_f.Show(); } catch(Exception v_e) { CSystemLog_301.ExceptionHandle(v_e); } }