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;
         }
     }
 }