加载ComboBox控件

       /// <summary>
        /// 加载公司
        /// </summary>
        /// <param name="cbbCompany">Combobox</param>
        public static void LoadValues2Company(System.Windows.Forms.ComboBox cbbCompany)
        {
            cbbCompany.DataSource = null;
            Company oComp = new Company();

            cbbCompany.DisplayMember = "NAME_CHS";
            cbbCompany.ValueMember = "ID";

            DataTable _dt = oComp.GetValidCompany();
            cbbCompany.DataSource = BaseClass.LoadInvalidValueToCombobox(_dt, "ID", "NAME_CHS");

    /// <summary>
        /// 加载一个无意义的值到Combobox控件
        /// </summary>
        /// <param name="dtSource">Combobox控件数据源</param>
        /// <param name="sValue">ValueMember字段</param>
        /// <param name="sDisplay">DisplayMember字段</param>
        /// <returns></returns>
        public static DataTable LoadInvalidValueToCombobox(DataTable dtSource, String sValue, String sDisplay)
        {
            DataRow _drNew = dtSource.NewRow();
            _drNew[sValue] = ;
            _drNew[sDisplay] = "请选择";
            dtSource.Rows.InsertAt(_drNew, );
            dtSource.AcceptChanges();

            return dtSource;
        }