Question

我有一个伙伴关系。将数据重新提交同一页的调查问卷净应用,每次都显示不同的问题。有一些BACK和NEXTuttons在问题之间联系。

我愿发现,在提交表格时,由于有人要求复读书。我走过了rel=“nofollow noreferer”>WebForms approach,但不知道如何在MVC 2号申请中应用这些本金,因为页面活动有线(我知道......)。 I m pretty new to Morgan s MVC model.

如何将这一原则适用于第2号行政指示? 是否有更好的办法检测复习?

Answer 1

您可使用以下中继职位模式:http://msdn.microsoft.com/en-us/library/system.web.mvc. Controllerbase.tempdata.aspx” rel=“诺referer”>TempData/code>。例:




The Back and Next buttons POST a form to a controller action
The controller action puts some state into the TempData and redirects to another controller action which will verify that the data is in TempData and return the view
The user presses F5 on the browser, the previous action is called on GET and as the state is no longer into TempData you know the user pressed F5 and didn t pass through the form submission.


说明这一点:

public class HomeController: Controller
{
    public ActionResult Index()
    {
        var state = TempData["state"];
        if (state == null) 
        {
            // the user directly arrived on this action without passing 
            // through the form submission
        }
        return View();
    }

    [HttpPost]
    public ActionResult Index(string back)
    {
        TempData["state"] = new object();
        return RedirectToAction("Index");
    }
}

友情链接