private void tb_syain_cd_DoubleClick(object sender, EventArgs e) { //選択画面へ string w_cd; w_cd = tss.search_syain("2", tb_syain_cd.Text); if (w_cd != "") { tb_syain_cd.Text = w_cd; if (chk_syain_cd() != true) { MessageBox.Show("社員コードに異常があります。"); tb_syain_cd.Focus(); } } }