泛型转DataTable方法［转帖］

   /// 将集合类转换成DataTable
    /// </summary>
    /// <param name="list">集合</param>
    /// <returns></returns>
    public DataTable ToDataTable(List<GongGaoInfo> list)
    {
        DataTable result = new DataTable();
        if (list.Count > 0)
        {
            PropertyInfo[] propertys = list[0].GetType().GetProperties();
            foreach (PropertyInfo pi in propertys)
            {
                result.Columns.Add(pi.Name, pi.PropertyType);
            }
            for (int i = 0; i < list.Count; i++)
            {
                ArrayList tempList = new ArrayList();
                foreach (PropertyInfo pi in propertys)
                {
                    object obj = pi.GetValue(list[i], null);
                    tempList.Add(obj);
                }
                object[] array = tempList.ToArray();
                result.LoadDataRow(array, true);
            }
        }
        return result;
    }

            // 定义筛选条件字符串和排序字符串
            string strSort = "PublishDate DESC";

            // 获得经过筛选和排序后的数据
            DataRow[] resultRows = dt.Select(strWhere, strSort);

转自：URL地址搞忘记了，真的不好意思，向作者致敬！