implement returnurl in asp.net mvc [closed]

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How to implement returnurl in asp.net mvc?

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Your question is very unclear so I can only be guessing. Personally I pass returnUrl as parameter to actions that need to redirect:

[HttpPost]
public ActionResult Foo(string returnUrl)
{
    // TODO: some processing ...

    // TODO: sanitize the url ensuring that it belongs to the same domain
    return Redirect(returnUrl);
}

and then I build HTML forms to invoke the action and pass the return url:

@using (Html.BeginForm())
{
    @Html.Hidden("returnUrl", Url.Action("someaction", "somecontroller"))
    <input type="submit" value="OK" />
}

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We did something like this in one of our projects.

In your controller, add a parameter for the returnUrl then in your method just redirect to it.

public ActionResult SomeActionMethod(int id, string returnUrl)
{
    //do some stuff

    if (!string.IsNullOrWhiteSpace(returnUrl))
    {
        return Redirect(returnUrl);
    }
    else
    {
        //return whatever
    }
}