CODEWITHSUNDEEP
c#httpwebrequestxmldocument
segFault
segFault

Reputation: 1228

Server returning 500 error when using WebRequest to get XML document

Here is my code to get the xml document from a url that is passed in.

var request = WebRequest.Create(url);
                    request.Method = "GET";
                    request.ContentType = "application/x-www-form-urlencoded";
                    request.ContentLength = 0;

                    var response = request.GetResponse(); // Error is thrown here

When I copy and paste the url into my browser it works just fine.

Here is the complete xml that is returned

<Model>
   <Item>
     <Id>7908</Id>
   </Item>
</Model>

Is the xml in an incorrect format? I have tried changing the content type to be application/xml but I still get this error.

EDIT=======================================================

I am trying to use webclient using this code:

using (var wc = new System.Net.WebClient())
                {
                    wc.Headers["Method"] = "GET";
                    wc.Headers["ContentType"] = "text/xml;charset=\"utf-8\"";
                    wc.Headers["Accept"] = "text/xml, */*";
                    wc.Headers["User-Agent"] = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; .NET CLR 3.5.30729;)";
                    wc.Headers[HttpRequestHeader.AcceptLanguage] = "en-us";
                    wc.Headers["KeepAlive"] = "true";
                    wc.Headers["AutomaticDecompression"] = (DecompressionMethods.Deflate | DecompressionMethods.GZip).ToString();

                    var response = wc.DownloadString(url);
                }

The response string is empty!!! Any ideas why this is not returning any result but pasting the url into the browser returns the xml?

Upvotes: 1

Views: 3826

Answers (3)

segFault
segFault

Reputation: 1228

I finally got it working. I had to use this code:

using (var wc = new System.Net.WebClient())
                {
                    wc.Headers["Method"] = "GET";
                    wc.Headers["Accept"] = "application/xml";

                    var response = wc.DownloadString(url);
                }

The key was using the accept header of "application/xml" otherwise the response would come back empty.

Upvotes: 2

Rob
Rob

Reputation: 1081

Why not use a WebClient instead.

public class MyWebClient : WebClient
{

    protected override WebRequest GetWebRequest(Uri address)
    {
        var request = base.GetWebRequest(address);
        if (request.GetType() == typeof(HttpWebRequest)){
            ((HttpWebRequest)request).UserAgent = "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.17 Safari/537.36";
        }
        return request;
    }
}

using(var wc = new MyWebClient()){
    var response = wc.DownloadString(url);
    //do stuff with response
}

Upvotes: 0

JuStDaN
JuStDaN

Reputation: 449

This should hopefully do the trick:

try 
{
  using(var response = (HttpWebResponse)request.GetResponse())
  {
    // Do things
  }
}
catch(WebException e)
{
   // Handled!...
}

Try what Joel Lee suggested if this fails.

Upvotes: 0

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