CODEWITHSUNDEEP
c#asp.net-mvcrazor
DrivenTooFar
DrivenTooFar

Reputation: 110

Save querystring Bewteen Actions

I have an index action that can be filtered and is done so by using a query string. When I choose a record I move to the Details action. From there I can navigate to other actions related to this record which will then lead me back to the Details action. I would like to be able to save the URL from the Index page which will have the query string parameters intact. Obviously I can't do this with a straight Request.UrlReferrer since it won't be correct if the previous action wasn't Index. I have come up with a solution but I was wondering if there was a better way. Thanks!

public ActionResult Details(int? id)
{
    var url = Request.UrlReferrer;

    // Save URL if coming from the Employees/Index page
    if (url != null && url.AbsolutePath == "/Employees")
        Session.Add("OfficeURL", url.ToString());

    // Model Stuff

    return View();
}

Details View

@Html.ActionLink("Back to List", "Index", null, new { @href = Session["OfficeURL"] })

Upvotes: 0

Views: 242

Answers (1)

Chris Pratt
Chris Pratt

Reputation: 239210

You need to pass a "return URL" with your links to the other views. Essentially:

Index.cshtml

@Html.ActionLink("View Details", "Details", "Foo", new { returnUrl = Request.RawUrl })

This will have the effect of putting the current index URL in the query string of the link. Then, in your other actions, you'll accept this as a param and store it in ViewBag:

public ActionResult Details(int? id, string returnUrl = null)
{
    ...

    ViewBag.ReturnUrl = returnUrl;
    return View();
}

Then, in these other views, you'll utilize this ViewBag member in the same way as above:

Details.cshtml

@Html.ActionLink("Click Me!", "Foo", "Foo", new { returnUrl = ViewBag.ReturnUrl })

When you're ready to go back to the index, then, you'd link/redirect to this return URL that you've been passing around.

Upvotes: 1

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