Develop Reference

Issues passing an Xml file to a method in console application

I am working on a c# console application where I am making a Http Post request to a web api by using xml file and I'm kind of new to XML and web services but I figured out the following code for the request but failed to pass xml data to the method
static void Main(string[] args)
{
string desturl=#"https://xyz.abcgroup.com/abcapi/";
Program p = new Program();
System.Console.WriteLine(p.WebRequestPostData(desturl, #"C:\Applications\TestService\FixmlSub.xml"));
}
public string WebRequestPostData(string url, string postData)
{
System.Net.WebRequest req = System.Net.WebRequest.Create(url);
req.ContentType = "text/xml";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(postData);
req.ContentLength = bytes.Length;
using (Stream os = req.GetRequestStream())
{
os.Write(bytes, 0, bytes.Length);
}
using (System.Net.WebResponse resp = req.GetResponse())
{
if (resp == null) return null;
using (System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream()))
{
return sr.ReadToEnd().Trim();
}
}
}
For obvious reasons the above code throws 404 error as I think I am not passing the xml data properly
May I know how I can fix this?

You're not posting xml, your posting the string C:\Applications\TestService\FixmlSub.xml
Change your method call from:
System.Console.WriteLine(p.WebRequestPostData(desturl, #"C:\Applications\TestService\FixmlSub.xml"));
to
var xml = XElement.Load(#"C:\Applications\TestService\FixmlSub.xml");
System.Console.WriteLine(p.WebRequestPostData(desturl, xml.ToString(SaveOptions.DisableFormatting));
If you are trying to learn post / receive, go for it. But there are open source libraries that are already well tested to use if you want to use them.
The non-free version of Servicestack.
And their older free-version. I think the older free version is great. I've never tried the newer one. You deal with objects, like say an Employee and pass that to the library and it does the translation to xml or whatever the web-service wants.
You can post whole strings if you want. They have great extension methods to help you with that too.

HttpWebRequest POST Login error 405

Im trying to make a small login system but i have this problem that when the project runs on VS2010 it says :
The remote server returned an error: (405) Method Not Allowed.
Heres my code:
//Our URL
string uri = "https://************************/ValidateUsername";
//Our postvars
byte[] buffer = Encoding.ASCII.GetBytes( "username=user" );
//Initialization
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
request.Accept = "application/json;odata=verbose";
request.Headers.Add("Language", "es-MX");
request.Headers.Add("Application", "-------------------");
request.Headers.Add("Version", "1.0");
//Our method is POST, otherway buffer would be useless
request.Method = "POST";
//We use form contentType, for the postvars
request.ContentType = "application/x-www-form-urlencoded";
//The lenght of the content its set by postvars (buffer) lenght
request.ContentLength = buffer.Length;
//We open a stream for writing the postvars
Stream PostData = request.GetRequestStream();
//Now we write, and afterwards, we close.
PostData.Write(buffer, 0, buffer.Length);
When i hover the pointer over "PostData" and then i go to the length and position attributes, i can read :
Length = 'PostData.Length' threw an exception of type 'System.NotSupportedException'
base {System.SystemException} = {"This stream does not support seek operations."}
im not sure if this is the real problem, but im trying to give the mos of information possible.
PostData.Close();
//Get the response Handle
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
//lets show info about the response
Console.WriteLine("Estatus de la respuesta:" + response.StatusCode);
Console.WriteLine("Servidor : " + response.Server);
//Now we read the response (the string), and output it
//Stream answer = response.GetResponseStream();
//StreamReader _answer = new StreamReader(answer);
//Console.WriteLine("Respuesta: " + _answer.ReadToEnd());
At some forum i read that maybe the "_answer.ReadToEnd()" could be the problem but even thought i commented , the problem still arises.
Im doing this so i can try it later on windows phone, dont know if im wasting my time , because they are not related.
I hope someone can help. Thanks in advance.

Error when sending HttpWebRequest from .NET to php site

Despite trying lots of things (see below), I can't get rid of the "Bytes to be written to the stream exceed the Content-Length bytes size specified." error that's thrown in
writer.Close();
This is the code that tries to post data from an ASP.NET to a php site. The script works fine as long as there are no special characters in the code - note the German Umlaut in 'Wörld'.
Uri uri = new Uri("http://mydomain/test.php");
string data = #"data=Hello Wörld";
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
request.Method = WebRequestMethods.Http.Post;
request.ContentLength = data.Length;
request.ContentType = "application/x-www-form-urlencoded";
StreamWriter writer = new StreamWriter(request.GetRequestStream());
writer.Write(data);
writer.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string tmp = reader.ReadToEnd();
response.Close();
Response.Write(tmp);
I have tried different variations using UTF-8 encodings, like:
request.ContentLength = System.Text.Encoding.UTF8.GetByteCount(data);
and/or
StreamWriter writer = new StreamWriter(request.GetRequestStream(), Encoding.UTF8);
I have also tried to convert the data to UTF-8 before sending it (somewhat ugly):
data = System.Text.Encoding.UTF8.GetString(System.Text.Encoding.Convert(System.Text.Encoding.UTF8, System.Text.Encoding.UTF8, System.Text.Encoding.UTF8.GetBytes(data)));
Yet the error remains. My feeling is that I just don't get the UTF-8 handling right. Any help is greatly appreciated, also any hint where I can find a perfectly working script that posts to php from ASP.NET (server side).

use
byte[] bdata = Encoding.UTF8.GetBytes(data);
and
request.ContentLength = bdata.Length;
and
Stream writer = request.GetRequestStream();
writer.Write(bdata, 0, bdata.Length);
writer.Close();

Problems consuming WebService in .Net (ReCaptcha)

I am having difficulty in consuming the reCaptcha Web Service using C#/.Net 3.5. Although I think the problem is with consuming web services in general.
String validate = String.Format("http://api-verify.recaptcha.net/verify?privatekey={0}&remoteip={1}&challenge={2}&response={3}", PrivateKey, UserIP, Challenge, Response);
WebClient serviceRequest = new WebClient();
serviceRequest.Headers.Add("ContentType","application/x-www-form-urlencoded")
String response = serviceRequest.DownloadString(new Uri(validate ));
It keeps telling me that the error is: nverify-params-incorrect. Which means:
The parameters to /verify were incorrect, make sure you are passing all the required parameters.
But it's correct. I am using the private key, the IP address (locally) is 127.0.0.1, and the challenge and response seem fine. However the error keeps occurring.
I am pretty sure this is a issue with how I am requesting the service as this is the first time I have actually used webservices and .Net.
I also tried this as it ensures the data is posted:
String queryString = String.Format("privatekey={0}&remoteip={1}&challenge={2}&response={3}",PrivateKey, UserIP, Challenge, Response);
String Validate = "http://api-verify.recaptcha.net/verify" + queryString;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(Validate));
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = Validate.Length;
**HttpWebResponse captchaResponse = (HttpWebResponse)request.GetResponse();**
String response;
using (StreamReader reader = new StreamReader(captchaResponse.GetResponseStream()))
response = reader.ReadToEnd();
Seems to stall at the point where I get response.
Any advice?
Thanks in advance

Haven't worked with the recaptcha service previously, but I have two troubleshooting recommendations:
Use Fiddler or Firebug and watch what you're sending outbound. Verifying your parameters would help you with basic troubleshooting, i.e. invalid characters, etc.
The Recaptcha Wiki has an entry about dealing with development on Vista. It doesn't have to be limited to Vista, though; if you're system can handle IPv6, then your browser could be communicating in that format as a default. It appears as if Recaptcha deals with IPv4. Having Fiddler/Firebug working would tell you about those other parameters that could be causing you grief.
This may not help solve your problem but it might provide you with better troubleshooting info.

So got this working, for some reason I needed to write the request to a stream like so:
//Write data to request stream
using (Stream requestSteam = request.GetRequestStream())
requestSteam.Write(byteData, 0, byteData.Length);
Could anyone explain why this works. I didn't think I would need to do this, don't completely understand what's happening behind the scenes..

Damien's answer is correct of course, but just to be clear about the order of things (I was a little confused) and to have a complete code sample...
var uri = new Uri("http://api-verify.recaptcha.net/verify");
var queryString = string.Format(
"privatekey={0}&remoteip={1}&challenge={2}&response={3}",
privateKey,
userIP,
challenge,
response);
var request = (HttpWebRequest)HttpWebRequest.Create(uri);
request.Method = WebRequestMethods.Http.Post;
request.ContentLength = queryString.Length;
request.ContentType = "application/x-www-form-urlencoded";
using (var writer = new StreamWriter(request.GetRequestStream()))
{
writer.Write(queryString);
}
string result;
using (var webResponse = (HttpWebResponse)request.GetResponse())
{
var reader = new StreamReader(webResponse.GetResponseStream());
result = reader.ReadToEnd();
}
There's a slight difference in that I'm writing the post variables to the request, but the core of it is the same.

How do you copy a file into SharePoint using a WebService?

I am writting a winforms c# 2.0 application that needs to put an XML file into a document library on SharePoint.
I want to use a WebService instead of using the object model (no sharepoint.dll to reference here)
I am currently using the http://webserver/site/_vti_bin/copy.asmx webservice.
Here is some code:
byte[] xmlByteArray;
using (MemoryStream memoryStream = new MemoryStream())
{
xmlDocument.Save(memoryStream);
xmlBytes = memoryStream.ToArray();
}
string[] destinationUrlArray = new string[] {"http://webserver/site/Doclib/UploadedDocument.xml"};
FieldInformation fieldInfo = new FieldInformation();
FieldInformation[] fields = { fieldInfo };
CopyResult[] resultsArray;
using (Copy copyService = new Copy())
{
copyService.Credentials = CredentialCache.DefaultCredentials;
copyService.Url = "http://webserver/site/_vti_bin/copy.asmx";
copyService.Timeout = 600000;
uint documentId = copyService.CopyIntoItems("", destinationUrlArray, fields, xmlByteArray, out resultsArray);
}
When this code runs, I get a single result in the resultsArray out parameter:
DestinationURL: "http://webserver/site/Doclib/UploadedDocument.xml"
ErrorCode: UnKnown
ErrorMessage: "Object reference not set to an instance of an object."
From my searching, I have found a couple of possible helps.
Microsoft TechNet -- "The copy.asmx copyintoitems will only work if the source and destination urls are in the same SPWebApplication (Site Collection)."
Microsoft Social -- "Object reference not set to an instance of an object
error occurs because of SharePoint not able to identified that particular property."
This leads me to believe my source url should be set to something, but what? This is originating from a client workstation and does not have a source URL.
Any help would be appricated.
hank you,
Keith

I know this is an old thread but it kept coming up as I was searching for a solution to the same problem.
Check Steve Curran's answer on this thread http://social.msdn.microsoft.com/Forums/en-SG/sharepointdevelopment/thread/833e38a8-f13c-490d-8ba7-b889b6b25e38. Looks like Basically the request fails because the destination url can't be resolved.
(Limitations of a new stackflow user - can't post more than one link. See my comment for the rest)
pat

SharePoint responds to a plain old HTTP PUT

Here is what is currently working:
WebRequest request = WebRequest.Create(“http://webserver/site/Doclib/UploadedDocument.xml”);
request.Credentials = CredentialCache.DefaultCredentials;
request.Method = "PUT";
byte[] buffer = new byte[1024];
using (Stream stream = request.GetRequestStream())
{
using (MemoryStream memoryStream = new MemoryStream())
{
dataFile.MMRXmlData.Save(memoryStream);
memoryStream.Seek(0, SeekOrigin.Begin);
for (int i = memoryStream.Read(buffer, 0, buffer.Length); i > 0;
i = memoryStream.Read(buffer, 0, buffer.Length))
{
stream.Write(buffer, 0, i);
}
}
}
WebResponse response = request.GetResponse();
response.Close();
So... Does anyone have an opinion as to if this "PUT" method is better in the SharePoint environment than using a built-in webservice?
Right now I would have to say the "PUT" method is better since it works and I could not get the WebService to work.
Keith

your code is fine, just use the destination url instead of an empty string. See below:
byte[] xmlByteArray;
using (MemoryStream memoryStream = new MemoryStream())
{
xmlDocument.Save(memoryStream);
xmlBytes = memoryStream.ToArray();
}
string destinationUrl = “http://webserver/site/Doclib/UploadedDocument.xml”
string[] destinationUrlArray = new string[] { destinationUrl };
FieldInformation fieldInfo = new FieldInformation();
FieldInformation[] fields = { fieldInfo };
CopyResult[] resultsArray;
using (Copy copyService = new Copy())
{
copyService.Credentials = CredentialCache.DefaultCredentials;
copyService.Url = "http://webserver/site/_vti_bin/copy.asmx";
copyService.Timeout = 600000;
uint documentId = copyService.CopyIntoItems(destinationUrl , destinationUrlArray, fields, xmlByteArray, out resultsArray);
}

I get the same message when I use the default credentials.
Try replacing them with this:
copyWebService.Credentials
= new NetworkCredential("Administrator", "pass", "MyDomain");

Here's some code I wrote awhile (i apologize, i've had to piece meal it together, but hopefully you get the point of it)
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create("http://sharepointsite/somefile.txt");
// Set the Method property of the request to POST.
request.Method = "PUT"
Stream dataStream;
// Set the ContentType property of the WebRequest.
request.ContentType = "multipart/form-data; charset=ISO-8859-1";
byte[] byteArray = File.ReadAllBytes(#"c:\somefile.txt");
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
HttpStatusCode statCode = response.StatusCode;
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();

I'm not sure if it will solve your problem but, when you reference the webservice, don't use the [site] part of the URL.
Try instead: http://[server]/_vti_bin/[webservice].
I'm not an expert in SP but I'm pretty sure the webservices belongs to the main server, not to an especific site.
Hope it helps.

I had a similiar problem, it turned out that the the client was configured to use NTLM security, but no NTLM header was attached.
I my case, becuase of the fact that I was using this code on the server-side of an ASP.NET applicaton, was to enable Windows authentication and set
identity impersonate="true"
in the server.web section.

if your sharepoint server is built on a farm,
Check your "Alternate Access Mapping" see if there is an entry:
yourwebserverurl intranet yourwebserverurl
if not, add it.
for my case, after adding this, the Copy service start working.
It probably due to farm load balance address resolve related.

I don't get it, why are you using Copy rather then UpdateListItems. Perhaps UpdateListItems will be a better match?