WebClient UploadData gives 400 Bad Request error when I upload file with special characters

Question

I am trying to upload documents to a sharepoint server.  I am able to do it successfully if the file name does not have special characters. However, if for example, an & exists in the file name (file&name.txt) i get a 400 Bad Request error returned from the UploadData method.

Here is my code:

WebClient wcUpload = new WebClient();
wcUpload.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
wcUpload.Encoding = System.Text.Encoding.ASCII;

/* url is passed into my upload method */
url = string fileName = HttpUtility.UrlEncode(url);

try
{
  wcUpload.UploadData(url, "PUT", fileByteArray);
}
catch (WebException ex)
{
   throw;
 }

I would really appreciate some help
Thanks

Answer 1

Hello

Could you please print the exception message and the call stack?

try
{
  wcUpload.UploadData(url, "PUT", fileByteArray);
}
catch (WebException ex)
{
// Log ex.Message and ex.StackTrace here.
   throw;
}

Additionally, please add this code before UploadData:

wcUpload.Headers.Add("Content-Type","application/x-www-form-urlencoded");

---

Regards,
Jialiang Ge
MSDN Subscriber Support in Forum
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Answer 2

Jialiang,

Here is the Exception Message: "The remote server returned an error: (400) Bad Request."

Here is the stack track:

at System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request)
at System.Net.WebClient.UploadData(Uri address, String method, Byte[] data)
at System.Net.WebClient.UploadData(String address, String method, Byte[] data)
at DocManagement.UploadDocument(Byte[] fileToUpload, string filename) line 1054"

Here is my latest code
WebClient wcUpload = new WebClient();
wcUpload.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
wcUpload.Encoding = System.Text.Encoding.ASCII;
wcUpload.Headers.Add("Content-Type", "application/x-www-form-urlencoded");

/* url is passed into my upload method */
url  = "http://pathToSharePointServer/Shared Documents/" + HttpUtility.UrlEncode(filename);

try
{
  wcUpload.UploadData(url, "PUT", fileByteArray);
}
catch (WebException ex)
{
   throw;
 }

Still getting 400 Bad Request Error.

Thanks
Chris

Answer 3

Hello Chris,

I currently do not see the cause of this. WebClient belongs to System.Net. We have a dedicated forum for classes in this namespace:
Network Class Library (System.Net)
http://social.msdn.microsoft.com/Forums/en-US/ncl/threads
I'd like to help you move this thread. Hope that this can be answered by the experts in that forum.

---

Regards,
Jialiang Ge
MSDN Subscriber Support in Forum
If you have any feedback of our support, please contact [e-mail].
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.

Answer 4

Can you retry it without UrlEncoding the filename?

If that doesnt work, get a tracelog (see instructions in my sig) so that we can see the request being sent over the wire.

---

feroze
--
My blog
Instruction on how to create a tracelog with your System.Net application