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    copied!<p>This isn't how I had to implement file upload at all. I had an action method with no parameters that used the current Request object to dive into the collection of posted files.</p> <p>Some sample code from my implementation:</p> <pre><code>[AcceptVerbs(HttpVerbs.Post)] public ContentResult Upload() { if (Request.Files.Count &gt; 0 &amp;&amp; Request.Files[0].ContentLength &gt; 0) { HttpPostedFileBase postedFile = Request.Files[0]; // Do something with it } } </code></pre> <p>Of course, writing tests for this becomes a PITA. You have to mock several objects in order to get it to work, for example:</p> <pre><code>var mockHttpContext = mocks.StrictMock&lt;HttpContextBase&gt;(); var mockRequest = mocks.StrictMock&lt;HttpRequestBase&gt;(); var postedFile = mocks.StrictMock&lt;HttpPostedFileBase&gt;(); var postedFileKeyCollection = mocks.StrictMock&lt;HttpFileCollectionBase&gt;(); mockHttpContext.Expect(x =&gt; x.Request).Return(mockRequest).Repeat.Any(); mockRequest.Expect(x =&gt; x.Files).Return(postedFileKeyCollection).Repeat.Any(); postedFileKeyCollection.Expect(x =&gt; x[0]).Return(postedFile).Repeat.Any(); postedFileKeyCollection.Expect(x =&gt; x.Count).Return(1); postedFile.Expect(f =&gt; f.ContentLength).Return(1024); postedFile.Expect(f =&gt; f.InputStream).Return(null); </code></pre> <p>It would be easier to create an interface into the posted files and only mock that, with a concrete implementation injected into your controller using IoC.</p> <p>I think this was largely based off of this post: <a href="http://www.hanselman.com/blog/ABackToBasicsCaseStudyImplementingHTTPFileUploadWithASPNETMVCIncludingTestsAndMocks.aspx" rel="nofollow noreferrer">Implementing HTTP File Upload with ASP.NET MVC including Tests and Mocks</a></p>
 

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