MVC how to return a view with a parameter

问题:

At the moment I have a Method that work, it is working when clicking a link here the code in Razor:

@Html.ActionLink("New User ,Register", "Register", new { OpenID = Model.OpenID })

I would like have the same effect with but returning the View from the Controller, at the moment I'm using this code with no success

return View("Register", lm);

I'm pretty new at MVC so I'm a bit confused. The view returned with my last code miss smt and I support is connected with the part new { OpenID = Model.OpenID }

Could you point me out in the right direction?

This how it is the method for my controller:

public ActionResult Register(string OpenID)

回答1:

Try to avoid ViewData and ViewBag . try to use strongly typed ViewModels. That makes your code clean (and the next developer who is gonna maintain your code, HAPPY)

Have a Property called OpenID in your ViewModel

public class RegisterViewModel
{
     //Other Properties also
     public string OpenID { set; get; }
}

Now you can set this value when returning the view, in your action method:

public ActionResult Register(string OpenId)
{
     var vm = new RegisterViewModel();
     vm.OpenID = OpenId;
     return View(vm);
}

回答2:

You can add any data you want to a ViewBag variable.

In your controller you'd set the value as such.

Controller

public ActionResult Register()
{
    ViewBag.OpenID = OpenID;

    return View()
}

And in your razor view you can access it the same way

MVC3 Razor View

@ViewBag.OpenID

回答3:

Please, take a look at this view (ViewA):

<div>
    @Html.ActionLink("My link", "ViewB", new { someData = "some data I'm passing on" })
</div>

And these two actions:

    public ActionResult ViewA()
    {
        return View();
    }

    public ActionResult ViewB(string someData)
    {
        //Here someData has the value "some data I'm passing on"
        return View();
    }

We're just passing the values by get (that is, the query string). By matching the names, MVC is able to do the magic for us =)

Hope this helps.

Regards