将枚举转化为数据源

 /// <summary>
    /// 把枚举转化成为数据源
    /// </summary>
    public class EnumToDataSource
    {
        private string dataKey                                   = string.Empty;
        private int dataValue                                    = -1;
        private static List<EnumToDataSource> listEnumDataSource = null;

        /// <summary>
        /// 数据源的Key值
        /// </summary>
        public string DataKey
        {
            get { return dataKey; }
        
        }

        /// <summary>
        /// 数据源的值
        /// </summary>
        public int DataValue
        {
            get { return dataValue; }
          
        }

      
        public EnumToDataSource(string key, int value)
        {
            if (null == listEnumDataSource)
            {
                listEnumDataSource = new List<EnumToDataSource>();
            }
            this.dataKey        = key;
            this.dataValue      = value;

            //listEnumDataSource.Add(this);
        }
        public EnumToDataSource()
        {
        }

        /// <summary>
        /// 把枚举转化为数据源
        /// </summary>
        /// <param name="dataEnum">枚举类型</param>
        /// <returns>数据列表</returns>
        public static List<EnumToDataSource> GetDatasource(Type type)
        {
            string[] dataKeys                         = Enum.GetNames(type);
            Array dataValues                          = Enum.GetValues(type);
            if (null == listEnumDataSource)
            {
                listEnumDataSource = new List<EnumToDataSource>();
            }
            listEnumDataSource.Clear();
            for (int i = 0; i < dataValues.Length; i++)
            {
                EnumToDataSource ets    = new EnumToDataSource(dataKeys[i],Convert.ToInt32(dataValues.GetValue(i)));
                listEnumDataSource.Add(ets);
            }

            return listEnumDataSource;
        }
    }





/********************************用法很简单**************************/
ddlType.DataSource      = EnumToDataSource.GetDatasource(typeof(枚举类型名));
ddlType.DataTextField   = "DataKey";
ddlType.DataValueField  = "DataValue";
ddlType.DataBind();

/*********************************OK 了****************************/