mvc 3 partial vs ascx

I am working on converting web form to mvc 3
one of the issues I have is ascx. Currently, our web form web app has a folder contain all ascx

It is okay for me to re-write those, but I would like to learn the best approach.

if request.querystring("type") = "life insurance"
  show lifeinsurance.ascx
else if request.querystring('type") = "auto insurance"
  show autoinsurance.ascx
 show somethingelse.ascx

1. In mvc 3 world. what can I do?
2. Assume each ascx has different html control. How can I collect the value?
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Carl TawnSystems and Integration DeveloperCommented:
You can output a partial view based on it's name. So you could try adding the querystring value into the PropertyBag for the view, or as part of your model, and having it drawn dynamically from that:
@{ Html.RenderPartial(PropertyBag.Type); }

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solution1368Author Commented:
can you show me the codes based on my situation? I just need to know how it works...
Carl TawnSystems and Integration DeveloperCommented:
Very simply, you'd be looking at something along the lines of:
// Controller action
public ActionResult Index()
    ViewData["Mode"] = "LifeInsurance";       // default

    // set partial view name from querystring
    if (Request.QueryString["type"] != null)
        ViewData["Mode"] = Request.QueryString["type"];

    return View();

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Then in your view:

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