C#.NET为List加入扩展方法：获取唯一值

    public static class ListTools
    {
        /// <summary>
        /// 获取唯一值列表
        /// </summary>
        /// <param name="strList">原始值</param>
        /// <returns>唯一值</returns>
        public static List<T> GetUniqueValue<T>(this List<T> list)
        {
            List<T> tmp = new List<T>();
            for (int i = 0; i < list.Count; i++)
            {
                if (!tmp.Contains(list[i]))
                    tmp.Add(list[i]);
            }
            return tmp;
        }
    }