我觉得这种思路好，所以把它贴出来

public partial class CustomGridLookUpEdit : GridLookUpEdit    {        #region 控件类别枚举        /// <summary>        /// 控件类别枚举        /// </summary>        public enum GridLookUpEditType        {            /// <summary>            /// none            /// </summary>            None,            /// <summary>            /// 客户信息            /// </summary>            Customer,            /// <summary>            /// 厂商信息            /// </summary>            Provider,            /// <summary>            /// 产品信息            /// </summary>            Prod,            /// <summary>            /// 销售单据            /// </summary>            SaleOrder,            /// <summary>            /// 采购单据            /// </summary>            StockOrder        }        #endregion        #region 内部成员字段        /// <summary>        /// datasource        /// </summary>        private DataSet _ds;        /// <summary>        /// 显示的文本        /// </summary>        private string _displayText = null;        /// <summary>        /// 显示文本对应的值        /// </summary>        private string _displayValue = null;        /// <summary>        /// 控件类别        /// </summary>        private GridLookUpEditType _type = GridLookUpEditType.None;        #endregion        #region 封装成员字段        /// <summary>        ///         /// </summary>        public DataSet Ds        {            get { return _ds; }            set { _ds = value; }        }        /// <summary>        ///         /// </summary>        public string DisplayText        {            get { return _displayText; }            set { _displayText = value; }        }        /// <summary>        ///         /// </summary>        public string DisplayValue        {            get { return _displayValue; }            set { _displayValue = value; }        }        /// <summary>        ///         /// </summary>        public GridLookUpEditType EditType        {            get { return _type; }            set            {                _type = value;                SetDisplayValue(_type);            }        }        #endregion        #region 自动生成代码        /// <summary>        /// 构造        /// </summary>        public CustomGridLookUpEdit()        {            InitializeComponent();        }        /// <summary>        /// 重构        /// </summary>        /// <param name="container"></param>        public CustomGridLookUpEdit(IContainer container)        {            container.Add(this);            InitializeComponent();        }        #endregion        #region 选择对应类别        /// <summary>        ///         /// </summary>        public void SetDisplayValue(GridLookUpEditType type)        {            switch (type)            {                case GridLookUpEditType.None: None(); break;                    //none                case GridLookUpEditType.Customer: CustomerEdit(); break;        //客户信息                case GridLookUpEditType.Provider: ProviderEdit(); break;        //厂商信息                case GridLookUpEditType.Prod: ProdEdit(); break;                //产品信息                case GridLookUpEditType.SaleOrder: SaleOrderEdit(); break;      //销售订单                case GridLookUpEditType.StockOrder: StockOrderEdit(); break;    //采购订单            }        }        /// <summary>        /// none        /// </summary>        private void None()        {            this.Ds = null;            this.DisplayText = null;            this.DisplayValue = null;        }        /// <summary>        /// 客户信息        /// </summary>        private void CustomerEdit()        {            this.DisplayText = "Customer";            this.DisplayValue = "CustomerId";           //比较理想的是在这写绑定数据源,可是实现不了           // (new GetDBType()).GetDataBase().GetData(DALClassType.Customer);        }        /// <summary>        /// 产商信息        /// </summary>        private void ProviderEdit()        {            this.DisplayText = "Provider";            this.DisplayValue = "ProviderId";        }        /// <summary>        /// 产品信息        /// </summary>        private void ProdEdit()        {            this.DisplayText = "Prod";            this.DisplayValue = "ProdId";        }        /// <summary>        /// 销售订单        /// </summary>        private void SaleOrderEdit()        {            this.DisplayText = "SaleOrder";            this.DisplayValue = "SaleOrderId";        }        /// <summary>        /// 采购订单        /// </summary>        private void StockOrderEdit()        {            this.DisplayText = "StockOrder";            this.DisplayValue = "StockOrderId";        }        #endregion        #region 数据|逻辑处理        /// <summary>        /// 数据绑定        /// </summary>        private void DataBinding()        {            this.Properties.TextEditStyle = TextEditStyles.Standard;            this.Properties.DataSource = this._ds.Tables[0];            this.Properties.DisplayMember = this._displayText;            this.Properties.ValueMember = this._displayValue;        }        #endregion    }