从控制器我传递了一个使用viewbag的帐号列表到视图，运行良好
控制器代码：

List<AccountNumberSum> my_output_list = new List<AccountNumberSum>();
      my_output_list.Add(new AccountNumberSum { 
                                                 account_number = oo.CreditAccountNumber,
                                                  total_amount = item1.Amount.Value
                                            });
      var grouped_data = my_output_list.GroupBy(x => x.account_number)
                    .Select(x => new { account_number = x.Key, total_amount = x.Sum(y=> y.total_amount) })
                    .ToList();
           ViewBag.grouped_data = grouped_data.Count();

查看代码为：

@if (ViewBag.grouped_data != null)
{
    <div class="tb">
        <table id="table_id" class="display" style="width:100%">
            <thead>
                <tr>
                    <th>
                        Sl.No
                    </th>
                    <th>
                        Account Number
                    </th>
                    <th>
                        Total Amount
                    </th>
                </tr>
            </thead>
            @foreach (var item in ViewBag.grouped_data.GetType().GetProperties())
            {
                <tr>
                    <td>
                        @item.account_number
                    </td>
                    <td>
                        @item.total_amount
                    </td>
                </tr>
            }
        </table>
    </div>

}我收到以下错误：microsoft.csharp.runtimebinder.runtimebinderexception:'无法将类型'int'隐式转换为'system.collections.ienumerable'。我想显示帐户号码，总金额在表中查看使用viewbag。