How to upload a file to ASP.NET MVC from a console application

Question

I'm trying to have a console application to send a XML file to a web application developed in ASP.NET MVC 3, and receive another XML as a response. The error returned in the console application is: The remote server returned an error: (500) Internal Server Error. When I get Fiddler2 running, I see this error: Object reference not set to an instance of an object. The code in the console application is: ``` static void Main(string[] args) { var wc = new WebClient(); byte[] response = wc.UploadFile("http://mysite.com/Tests/Test", "POST", "teste.xml"); string s = System.Text.Encoding.ASCII.GetString(response); Console.WriteLine(s); Console.ReadKey(); } ``` The code in the MVC Controller is: ``` [HttpPost] public ActionResult Test(HttpPostedFileBase file) { XElement xml = XElement.Load(new System.IO.StreamReader(file.InputStream)); var test = new MyTest(); return File(test.RunTest(xml), "text/xml", "testresult.xml"); } ``` `RunTest()` works well, since this method works when I upload the f…

Accepted Answer

Your problem is that WebClient.UploadFile isn't posting a form with the enctype set to multipart/form-data using an input named "file" for MVC to map to. Try changing your server side method to this:

```
[HttpPost]
public ActionResult Test()
{
    var file = Request.Files[0] as HttpPostedFile;
    XElement xml = XElement.Load(new System.IO.StreamReader(file.InputStream));
    var test = new MyTest();
    return File(test.RunTest(xml), "text/xml", "testresult.xml");
}
```

How to upload a file to ASP.NET MVC from a console application

Solution

Problem

Related problems