private void txtKAICD_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Enter && (!TextboxRequireCheck(txtKAICD, "会社CD"))) { mkaiEntity.KAICD = txtKAICD.Text.ToString(); DataTable dt = loginbl.MKAI_SELECT(mkaiEntity);//Select Company Name if (dt.Rows.Count > 0) { lblJSYRN.Text = dt.Rows[0][0].ToString(); txtTANCD.Focus(); } else { com.DSP_MSG("E012", "会社CD", string.Empty, string.Empty, string.Empty, string.Empty).Equals("1"); lblJSYRN.Text = string.Empty; } } }