List<T> To DataTable

        public DataTable ListToDataTable<T>(List<T> list) where T : class
        {
            DataTable dt = new DataTable();
            foreach (PropertyInfo info in typeof(T).GetProperties())
            {
                dt.Columns.Add(new DataColumn(info.Name, info.PropertyType));
            }
            foreach (var item in list)
            {
                DataRow row = dt.NewRow();
                foreach (PropertyInfo info in typeof(T).GetProperties())
                {
                    //todo: 如果T的属性有List<>类型的，这里不会得到预期的结果，需要进一步处理
                    row[info.Name] = info.GetValue(item, null);
                }
                dt.Rows.Add(row);
            }
            return dt;
        }