asp.net-mvc-3 - 如何处理MVC3中的异常？

Question

我在MVC3应用程序中工作。我正在努力处理 Controller 中的异常。

这里是我的帐户 Controller ，

public ActionResult Register(NewRegister model)
{
    if (ModelState.IsValid)
    {
        if (!IsUserLoginExist(model.Email))
        {
            AccountServiceHelper.CreatePerson(model);
            return RedirectToAction("RegistrationConfirmation", "Account");
        }
        else
        {
            ModelState.AddModelError("","Email Address already taken.");
        }
    }
    return View(model);
}

验证 IsUserLoginExist后，我只是调用Helper类，即 AccountServiceHelper来使用 CreatePerson这样的Web服务方法。

我的助手类如下所示:

public static void CreatePerson(NewRegister model)
{
    try
    {
        try
        {
            var FirstName = model.FristName;
            var LastName = model.LastName;
            var Email = model.Email;
            var Role = model.Role;
            var Password = model.Password;
            .....
            .....
            service.CreatePerson(model);
            service.close();
        }
        catch(Exception e) 
        {

        }
    }
    catch { }
}

我的问题是如何处理助手类中的异常并返回 Controller 。

Answer 1

一种可能是在 Controller 上处理异常:

public static void CreatePerson(NewRegister model)
{
    var FirstName = model.FristName;
    var LastName = model.LastName;
    var Email = model.Email;
    var Role = model.Role;
    var Password = model.Password;
    .....
    .....
    service.CreatePerson(model);
    service.close();
}

接着:

public ActionResult Register(NewRegister model)
{
    if (ModelState.IsValid)
    {
        try
        {
            if (!IsUserLoginExist(model.Email))
            {
                AccountServiceHelper.CreatePerson(model);
                return RedirectToAction("RegistrationConfirmation", "Account");
            }
            else
            {
                ModelState.AddModelError("", "Email Address already taken.");
            }
        }
        catch (Exception ex)
        {
            ModelState.AddModelError("", ex.Message);
        }
    }
    return View(model);
}