asp.net 枚举文件里面的数字绑定到DropDownList里面去

public class AppEnum
{
public enum PointLogType : int
{
/// <summary>
/// Email确认
/// </summary>
[Description("Email确认")]
Recruit = 1, //新客户激活+
/// <summary>
/// 老客户回馈
/// </summary>
[Description("老客户回馈")]
Veteran = 2, //老客户购物历史回复
/// <summary>
/// 生成订单
/// </summary>
[Description("生成订单")]
CreateOrder = 3, //下订单-
/// <summary>
/// 作废订单
/// </summary>
[Description("作废订单")]
AbandonSO = 5, //作废订单
/// <summary>
/// 作废订单取消
/// </summary>
[Description("作废订单取消")]
CancelAbandonSO = 6, //审核作废取消-
/// <summary>
/// 退货
/// </summary>
[Description("退货")]
ReturnProduct = 7, //退货-
/// <summary>
/// 取消退货
/// </summary>
[Description("取消退货")]
CancelReturn = 8,
/// <summary>
/// 取消出库
/// </summary>
[Description("取消出库")]
CancelOutstock = 9, //取消出货
/// <summary>
/// 积分转移
/// </summary>
[Description("积分转移")]
TransferPoint = 10, //积分转移
/// <summary>
/// 购物得分
/// </summary>
[Description("购物得分")]
AddPointLater = 11, //滞后加分
/// <summary>
/// 订单修改
/// </summary>
[Description("订单修改")]
UpdateSO = 12, //修改SaleOrder
/// <summary>
/// 批发扣除
/// </summary>
[Description("批发扣除")]
WholeSale = 13, //批发减分-, 好象没有使用。
/// <summary>
/// 买卡
/// </summary>
[Description("买卡")]
InfoProduct = 14, //买卡减分-
/// <summary>
/// 其他
/// </summary>
[Description("其他")]
BizRequest = 15, //Request
/// <summary>
/// 商品评论送积分
/// </summary>
[Description("商品评论送积分")]
Remark = 16, //Remark
/// <summary>
/// 注册送积分
/// </summary>
[Description("注册送积分")]
NewRegister = 17, //注册送积分
/// <summary>
/// DIY活动积分增减
/// </summary>
[Description("DIY活动积分增减")]
DIY = 18, //DIY活动积分增减， 成都DIY系统，没有用起来。
/// <summary>
/// 系统转移积分
/// </summary>
[Description("系统转移积分")]
SysTransferPoint = 19, //系统帐号neweggcs转移积分给客户
/// <summary>
/// 系统帐号增加积分
/// </summary>
[Description("系统帐号增加积分")]
AddPointToSysAccounts = 20, //财务给系统帐号增加积分
/// <summary>
/// 参加竞猜
/// </summary>
[Description("参加竞猜")]
BetReductPoint = 21, //下注使用积分
/// <summary>
/// 竞猜所得
/// </summary>
[Description("竞猜所得")]
BetAddPoint = 22, //开奖得积分
/// <summary>
/// 新用户第一次购物赠送积分
/// </summary>
[Description("新用户第一次购物赠送积分")]
NewCustomerFirstBuy = 23, //新注册用户，第一次购物送积分
/// <summary>
/// 自动提升精华赠送积分
/// </summary>
[Description("自动提升精华赠送积分")]
SetScoreAuto = 24, //自动提升精华赠送积分
/// <summary>
/// 市场促销活动增送积分
/// </summary>
[Description("市场促销活动增送积分")]
MKTCampaign = 25,
/// <summary>
/// 到期回收积分
/// </summary>
[Description("到期回收积分")]
DisusePoint = -1
}
}

ddlType.DisplayMember = "Value";
ddlType.ValueMember = "Key";
ddlType.DataSource = CommonFunctions.GetEnumItems(typeof(AppEnum.PointLogType)