ASP.NET MVC 2-是否值得为此方案创建自定义模型绑定器?

我有一个复杂的表单视图模型,如下所示:

public class TransactionFormViewModel
{
    public Session SessionRecord { get; private set; }
    public IEnumerable<Resource> ResourcePerSessionRecord { get; private set; }
    public Person PersonRecord { get; private set; }
    public decimal SubTotal { get; private set; }

    public TransactionFormViewModel(Person patient, Session session, IEnumerable<Resource> resourcePerSession)
    {
        this.PersonRecord = person;
        this.SessionRecord = session;
        this.ResourcePerSession = resourcePerSession
        this.SubTotal = CalculateSubTotal();
    }

    private decimal CalculateSubTotal()
    {
        return ResourcePerSession.Sum(x => x.Cost);
    }
}

这是我的模型,我在视图中使用,它(视图)如下所示:

        <A table that shows Person data></table>
        <A table that shows a review of the Session> </table>

       <!-- the submit button i need to complete the transaction -->
       <% using (Html.BeginForm("PayNow", "Session")) 
       {  %>
            <div id="trans-ses-footer">
                <%:Html.HiddenFor(x => x.SessionRecord.SessionID) %>
                <%:Html.HiddenFor(x => x.SessionRecord.PersonID) %>
                <%:Html.HiddenFor(x => x.SubTotal) %>

                <input type="submit" value="Pay" />
            </div>        
    <% } %>

</div>

控制器如下所示: [httppost公司] 公共操作结果paynow() { //事务模型 事务处理=新事务();

        transaction.SessionID = int.Parse(Request.Form["SessionRecord.SessionID"]);
        transaction.PersonID = int.Parse(Request.Form["SessionRecord.PersonID"]);
        transaction.TotalCost = decimal.Parse(Request.Form["SubTotal"]);
        transaction.Paid = true;

        _sessionRepository.SaveTransaction(transaction);
        TempData["TransactionMessage"] = "The transaction was saved successfully.";

        return View();
    }

我使用request.for m来获取事务所需的值。如果我想这样做:

Public ActionResult(Transaction transaction)
{
  if(ModelState.IsValid) 
       _transactionRepository.SaveTransaction(transaction) 
  etc...
}

我想我需要创建一个自定义模型投标人。这样的麻烦值得吗?我会在表演或其他方面有所收获吗?或者你知道我能做这种事的其他方法吗?我不知道如何正确地表达这种情况,所以我找不到任何相关的… 提前谢谢你。