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 file via form (in a method with the same name, using method GET). RunTest()
returns the XML with the response.
When I debug the MVC application, I see the problem: the variable file
is null!
How do I fix that? What do I have to change in my console application for it to actually send a file? Or is it the case to change the MVC method?
And, before trying to use WebClient
, I tried this code here: http://msdn.microsoft.com/en-us/library/debx8sh9.aspx, and had the same results.
Uploading a file in Asp.Net MVC application is very easy. The posted file is automatically available as a HttpPostedFileBase parameters in the action of the controller. For uploading a file on the server you required to have a file input control within html form having encoding type set to multipart/form-data.
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");
}
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