RedirectToRoute with Parameters Objects

Question

我在控制器A中并使​​用redirectToRoute到达控制器B，我传递了两个对象参数，但我注意到这些值在重定向时为空.RedirectToRoute不允许传递对象?????

Answer 1

重定向时，您只能传递简单的标量值而不能传递复杂的对象。例如：

public ActionResult Index()
{
    SomeModel model = ...
    return RedirectToAction("Foo", new 
    {
        Prop1 = model.Prop1,
        Prop2 = model.Prop2,
        Prop3 = model.Prop3,
    });
}

public ActionResult Foo(SomeModel model)
{
    // model.Prop1, model.Prop2 and model.Prop3 will be correctly bound here
    ...
}

另一种可能性是将对象持久保存到数据存储区并仅传递相应的ID：

public ActionResult Index()
{
    SomeModel model = ...
    string id = Repository.Save(model);
    return RedirectToAction("Foo", new { id = id });
}

public ActionResult Foo(string id)
{
    // fetch the model from repository:
    SomeViewModel model = Repository.Load(id);
    ...
}