c# 属性没有被填满

Question

我正在尝试在控制器类中设置属性Klimatogram.Locatie，如下所示：

public ActionResult SelectKlimatorgramVanLocatie(LocatieKlimatogramViewModel model)
{

Locatie selectedLocatie = (Locatie)Session["GevondenLocatie"];
       Klimatogram klimatogram = new Klimatogram(selectedLocatie);


       TempData["kilmatogram"] = klimatogram;

       return RedirectToAction("Index", "Vragen");
}

所以如果我调试我可以看到klimatogram.Locatie 是由selectedLocatie 设置的。

编辑：

现在 klimatogram.Locatie 被填满了。但是当我查看 Klimatogram 中的值时，它们都是 0。

这是 Klimatogram 类中的一个示例：

public class Klimatogram
{
    public Klimatogram(Locatie selectedLocatie)
    {
       Locatie =selectedLocatie;
    }


    public Locatie Locatie { get; set; }

    public int Id { get; set; }

    private double warmsteMaand;
    private double aantalDrogeMaanden;
    private double gemJaarTemp;
    private double gemJaarNeerslag;
    private double hoeveelNeerslagWinter;
    private double hoeveelNeerslagZomer;
    private double koudsteMaand;

    public int klimaId { get; set; }




    public double TempWarmsteMaand
    {
        get { return warmsteMaand; }
        set
        {
            value = Locatie.TemperatuurPerMaand[0];
            for (int i = 1; i < 12; i++)
            {
                if (Locatie.TemperatuurPerMaand[i] > value)
                {
                    value = Locatie.TemperatuurPerMaand[i];
                }
            }
            warmsteMaand = value;
        }
    }

所以这个方法没有从我的Locate 中获得任何价值。当我调试它说它是 0 这是错误的。

这是我的 vragenController：

公共行动结果索引（） {

        var klimatogram = (Klimatogram)TempData["kilmatogram"];

        VragenViewModel vragenViewModel = new VragenViewModel(klimatogram);

        return View("VragenControl",vragenViewModel);
    }

这是视图模型：

公共类 VragenViewModel {

//    public SelectList Maanden { get; set; }

    public VragenViewModel()
    {

    }

    public VragenViewModel(Klimatogram klima)
    {
        warm = klima.TempWarmsteMaand;
        koud = klima.TempKoudsteMaand;
        droge = klima.AantalDrogeMaanden;
        winterneerslag = klima.HoeveelheidNeerslagWinter;
        zomerneerslag = klima.HoeveelheidNeerslagZomer;
    }

    public double zomerneerslag
    { get; set; }

    public double winterneerslag { get; set; }

    public double droge { get; set; }

    public double koud { get; set; }

    public double warm { get; set; }


}

Answer 1

也许只是

public ActionResult SelectKlimatorgramVanLocatie(LocatieKlimatogramViewModel model)
    {

        Locatie selectedLocatie = (Locatie)Session["GevondenLocatie"];
        Klimatogram klimatogram = new Klimatogram();
        klimatogram.Locatie = selectedLocatie;




        return Index(klimatogram);
    }

Answer 2

RedirectToAction 的第三个参数是routeValues，不像View 那样传递模型。

您可以使用TempData 变量按照this answer 传递数据：

public ActionResult SelectKlimatorgramVanLocatie(LocatieKlimatogramViewModel model)
{

    Locatie selectedLocatie = (Locatie)Session["GevondenLocatie"];
    Klimatogram klimatogram = new Klimatogram();
    klimatogram.Locatie = selectedLocatie;

    TempData["kilmatogram"] = kilmatogram;

    return RedirectToAction("Index", "Vragen");
}

// ...

public ActionResult Index()
{
    var kilmatogram = (Kilmatogram)TempData["kilmatogram"];

    // ...
}