List转DataTable代码

  /// <summary>
        /// 将list 转换 DataTable
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="list">list集合</param>
        /// <returns></returns>
        public static DataTable ToDataTable<T>(List<T> list)
        {
            DataTable result = new DataTable();
            if (list.Count > 0)
            {
                //用PropertyInfo获取list的公共属性
PropertyInfo[] propertys = list[0].GetType().GetProperties();
                //遍历
foreach (PropertyInfo pi in propertys)
                {
                    //给DataTable附上列名
result.Columns.Add(pi.Name, pi.PropertyType);
                }

                for (int i = 0; i < list.Count; i++)
                {
                    ArrayList tempList = new ArrayList();
                    foreach (PropertyInfo pi in propertys)
                    {
                        //声明一个ArrayList集合，将list中的值给ArrayList,长度不明确给NULL
                        object obj = pi.GetValue(list[i], null);
                        tempList.Add(obj);
                    }
                    object[] array = tempList.ToArray();
                    //将数组获取的值给DataTable,array为值的集合，true为添加新行
result.LoadDataRow(array, true);
                }
            }
            return result;
        }