HttpRouteUrl and Attribute Routing in WebAPI 2

Question

I have the following controller which allows me to download a file via CSV using a URL that ends in /api/v1/report/123.csv:

[RoutePrefix("api/v{version:int?}/report")]
public class ReportController : ApiController
{
    // ...
    [Route("{id}.{ext}", Name="DownloadCsvReport")]
    public HttpResponseMessage Get(int id, String ext)
    {
       //...
    }
}

Are there any helpers that will construct the correct URL? I'm trying to link to the file in an MVC4.5 page but I don't seem to be able to get either the extension or the version:

@Url.HttpRouteUrl("DefaultApi", new { controller = "Report", ext="csv", version=1, id = 3, })

@Url.RouteUrl(routeName: "DownloadCsvReport", routeValues: new { id=123, version=1, ext = "csv"})

@Url.Action("DownloadCsvReport", new { id = 123, ext="csv" })

@Url.RouteUrl("DefaultApi", new { httproute = true, controller = "Report", id = 123, Ext="csv", version =1 })

I don't think I'm on the right track with any of these.... None of them substitute the version in the routeprefix or ext in the route attribute, plus various other problems. Is there any way to link to the URL without hardcoding the path?

Kiran · Accepted Answer · 2014-03-14 19:10:52Z

7

Try the following:

@Url.HttpRouteUrl("DownloadCsvReport", new { ext="csv", version=1, id = 3, })

OR

@Url.RouteUrl("DownloadCsvReport", new { httproute = true, id = 123, Ext="csv", version =1 })

edited Mar 14, 2014 at 19:10

answered Mar 14, 2014 at 6:19

Kiran

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2 Comments

mikebridge Over a year ago

Thanks! Both these work perfectly when I omit "controller" from the dynamic object. It looks like that appends an extra "controller=Report" onto the querystring.

Kiran Over a year ago

that's right...we do not need controller here as this is attribute routing..i have updated my answer above...thanks for finding that out..

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