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How do I upload xml string with/without storing it on local disk using C#?

I am working on a feature that can take xmlstring as an input and uploads it to the server. Below is the code I'm playing around but I saw some answers in the other places suggesting System.io.stream. So, I'm curious about that way of doing it. How can I just store the .xml on the server with/without saving it on the disk.
Code for using file on the Base Directory folder location
string filename = "Sample.XML";
List<string> file = new();
file.Add(filename);
//Downloading XML string using web client
string Xml = _webClientService.DownloadXml("http://aws.api/Links?=admin");
string fileLocation = AppDomain.CurrentDomain.BaseDirectory + "\\SampleFiles";
if (!Directory.Exists(fileLocation)) { Directory.CreateDirectory(fileLocation); }
XmlReader reader = XmlReader.Create(Xml);
XDocument doc = XDocument.Load(reader);
doc.Save(fileLocation + $"\\{file}");
I'm yet to work on the upload piece. But the method declaration would look like:
UploadFiles(string filelocation, List<string> fileNames);
2nd method using System.io.stream
Stream s = _httpService.GetStream("http://aws.api/Links?=admin");
var file = "sample.gz";
Stream gZip = new GZipStream(s, CompressionMode.Decompress);
XmlReader reader = XmlReader.Create(gZip, new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment });
reader.MoveToContent();
XDocument doc = XDocument.Load(reader);
And for this one, the prototype can be like:
UploadFileStream(string file, Stream strm);
Code for GetStream:
public static async Task<Stream> GetStream(string url)
{
var t = Task.Run(() => httpClient.GetAsync(url));
t.Wait();
HttpResponseMessage response = t.Result;
Stream res;
// Handle the response
switch (response.StatusCode)
{
case HttpStatusCode.OK:
res = await response.Content.ReadAsStreamAsync();
break;
default:
int statusCode = (int)response.StatusCode;
throw new HttpException(statusCode, response.ReasonPhrase);
}
return res;
}
Is it possible to avoid gZip conversion & store xmlfile direct to server using the memory stream?

Obtaining the XML encoding from an XML declaration fragment: XmlDeclaration is not supported for partial content parsing

I'm working on some code to read an XML fragment which contains an XML declaration, e.g. <?xml version="1.0" encoding="utf-8"?> and parse the encoding. From MSDN, I should be able to do it like this:
var nt = new NameTable();
var mgr = new XmlNamespaceManager(nt);
var context = new XmlParserContext(null, mgr, null, XmlSpace.None);
var reader = new System.Xml.XmlTextReader(#"<?xml version=""1.0"" encoding=""UTF-8""?>",
System.Xml.XmlNodeType.XmlDeclaration, context);
However, I'm getting a System.Xml.XmlException on the call to the System.Xml.XmlTextReader constructor with an error message:
XmlNodeType XmlDeclaration is not supported for partial content
parsing.
I've googled this error in quotes -- exactly zero results found (edit: now there's one result: this post) -- and without quotes, which yields nothing useful. I've also looked at MSDN for the XmlNodeType, and it doesn't say anything about it not being supported.
What am I missing here? How can I get an XmlTextReader instance from an XML declaration fragment?
Note, my goal here is just to determine the encoding of a partially-built XML document where I'm making the assumption that it at least contains a declaration node; thus, I'm trying to get reader.Encoding. If there's another way to do that, I'm open to that.
At present, I'm parsing the declaration manually using regex, which is not the best approach.

Update: Getting the encoding from XML documentation or from XML fragment:
Here's a way to get the encoding without having to resort to fake root, using XmlReader.Create.
private static string GetXmlEncoding(string xmlString)
{
if (string.IsNullOrWhiteSpace(xmlString)) throw new ArgumentException("The provided string value is null or empty.");
using (var stringReader = new StringReader(xmlString))
{
var settings = new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment };
using (var xmlReader = XmlReader.Create(stringReader, settings))
{
if (!xmlReader.Read()) throw new ArgumentException(
"The provided XML string does not contain enough data to be valid XML (see https://msdn.microsoft.com/en-us/library/system.xml.xmlreader.read)");
var result = xmlReader.GetAttribute("encoding");
return result;
}
}
}
Here's the output, with a full and fragment XML:
If you want to have System.Text.Encoding, you can modify the code to look like this:
private static Encoding GetXmlEncoding(string xmlString)
{
using (StringReader stringReader = new StringReader(xmlString))
{
var settings = new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment };
var reader = XmlReader.Create(stringReader, settings);
reader.Read();
var encoding = reader.GetAttribute("encoding");
var result = Encoding.GetEncoding(encoding);
return result;
}
}
Old answer:
As you mentioned, XmlTextReader's Encoding-property contains the encoding.
Here's a full Console app's source code which hopefully is useful:
class Program
{
static void Main(string[] args)
{
var asciiXML = #"<?xml version=""1.0"" encoding=""ASCII""?><note><to>Tove</to><from>Jani</from><heading>Reminder</heading><body>Don't forget me this weekend!</body></note>";
var utf8XML = #"<?xml version=""1.0"" encoding=""UTF-8""?><note><to>Tove</to><from>Jani</from><heading>Reminder</heading><body>Don't forget me this weekend!</body></note>";
var asciiResult = GetXmlEncoding(asciiXML);
var utfResult = GetXmlEncoding(utf8XML);
Console.WriteLine(asciiResult);
Console.WriteLine(utfResult);
Console.ReadLine();
}
private static Encoding GetXmlEncoding(string s)
{
var stream = new MemoryStream(Encoding.UTF8.GetBytes(s));
using (var xmlreader = new XmlTextReader(stream))
{
xmlreader.MoveToContent();
var encoding = xmlreader.Encoding;
return encoding;
}
}
}
Here's the output from the program:
If you know that the XML only contains the declaration, maybe you can add an empty root? So for example:
var fragmentResult = GetXmlEncoding(xmlFragment + "<root/>");

Good evening, here's the solution with a System.Text.Encoding as output.
I made it to be clear, and step by step.
class Program
{
static void Main(string[] args)
{
var line = File.ReadLines(YourFileName).First();
var correctXml = line + "<Root></Root>";
var xml = XDocument.Parse(correctXml);
var stringEncoding = xml.Declaration.Encoding;
var encoding = System.Text.Encoding.GetEncoding(stringEncoding);
}
}

Maybe late but you can use below code after loading it in a XmlDocument
static string getEncoding(XmlDocument xml)
{
if (xml.FirstChild.NodeType == XmlNodeType.XmlDeclaration)
{
return (xml.FirstChild as XmlDeclaration).Encoding;
}
return "utf-8";
}

If you have a byte array as input, try something like this:
private Encoding getEncoding(byte[] data)
{
XmlReaderSettings settings = new XmlReaderSettings();
settings.DtdProcessing = DtdProcessing.Ignore;
XmlDocument doc = new XmlDocument();
MemoryStream ms = new MemoryStream(data);
XmlReader reader = XmlReader.Create(ms, settings);
doc.Load(reader);
XmlDeclaration declaration = doc.ChildNodes.OfType<XmlDeclaration>().FirstOrDefault();
return Encoding.GetEncoding(declaration.Encoding);
}

Using SAXON 9.5 (nuget) with Schematron

I am running this code:
string path = AppDomain.CurrentDomain.BaseDirectory;
// Uri schemaUri = new Uri(#"file:\\" + path + #"\sch\patient.sch");
Uri totransformEE = new Uri(#"file:\\" + path + #"\po\po-schema.sch");
Uri transformER = new Uri(#"file:\\" + path + #"\xsl\conformance1-5.xsl");
///////////////////////////////
// Crate Schemtron xslt to be applied
///////////////////////////////
// Create a Processor instance.
Processor processor = new Processor();
// Load the source document
XdmNode input = processor.NewDocumentBuilder().Build(totransformEE);
// Create a transformer for the stylesheet.
XsltTransformer transformer = processor.NewXsltCompiler().Compile(transformER).Load();
// Set the root node of the source document to be the initial context node
transformer.InitialContextNode = input;
// Create a serializer
Serializer serializer = new Serializer();
MemoryStream st = new MemoryStream();
serializer.SetOutputStream(st);
// Transform the source XML to System.out.
transformer.Run(serializer);
st.Position = 0;
System.IO.StreamReader rd = new System.IO.StreamReader(st);
string xsltSchematronStylesheet = rd.ReadToEnd();
System.Diagnostics.Debug.WriteLine(xsltSchematronStylesheet);
// Load the source document
Uri transformEE2 = new Uri(#"file:\\" + path + #"\po\po-bad.xml");
var documentbuilder2 = processor.NewDocumentBuilder();
XdmNode input2 = documentbuilder2.Build(transformEE2);
////// Create a transformer for the stylesheet.
StringReader sr2 = new StringReader(xsltSchematronStylesheet);
XsltTransformer transformer2 = processor.NewXsltCompiler().Compile(sr2).Load();
// Set the root node of the source document to be the initial context node
transformer2.InitialContextNode = input2;
// Create a serializer
Serializer serializer2 = new Serializer();
MemoryStream st2 = new MemoryStream();
serializer.SetOutputStream(st2);
transformer2.MessageListener = new MyMessageListener();
// Transform the source XML to System.out.
transformer2.Run(serializer2);
st2.Position = 0;
System.IO.StreamReader rd2 = new System.IO.StreamReader(st2);
string xsltSchematronResult = rd2.ReadToEnd();
System.Diagnostics.Debug.WriteLine(xsltSchematronResult);
I get what appears to be an XSLT file when examining xsltSchematronStylesheet. However the stream at the end st2 has 0 length. Also, MyMessageListener.Message receives no calls (I used a break point).
I am not sure if I have bad code, bad sample files, etc.
I believe my sample files are correct, but maybe I have bad ones or am missing some.
Does anyone know why no data is returned to the stream st2. If not can you direct me to a good simple sample that has all the files and works?

My real underlying problem was finding simple complete sample code to do Schematron in .Net. So for the next guy here is the sample I was looking for. I have tried to make this as complete as possible. If I missed something, leave a comment.
Create a unit test project
Run the Nuget Command
Download the Schematron files
Use the included classes and sch, xml files.
Run the test program
Nuget Saxon Commandline:
Install-Package Saxon-HE
Download Up to date Schematron Files
http://www.schematron.com/tmp/iso-schematron-xslt2.zip
UnitTest:
using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.IO;
namespace SOAPonFHIR.Test
{
[TestClass]
public class Schematron
{
[TestMethod]
public void XSLT_SAXON_Simple_Schematron2()
{
///////////////////////////////
// Transform original Schemtron
///////////////////////////////
string path = AppDomain.CurrentDomain.BaseDirectory;
Uri schematron = new Uri(#"file:\\" + path + #"\simple\input.sch");
Uri schematronxsl = new Uri(#"file:\\" + path + #"\xsl_2.0\iso_svrl_for_xslt2.xsl");
Stream schematrontransform = new Test.XSLTransform().Transform(schematron, schematronxsl);
///////////////////////////////
// Apply Schemtron xslt
///////////////////////////////
FileStream xmlstream = new FileStream(path + #"\simple\input.xml", FileMode.Open, FileAccess.Read, FileShare.Read);
Stream results = new Test.XSLTransform().Transform(xmlstream, schematrontransform);
System.Diagnostics.Debug.WriteLine("RESULTS");
results.Position = 0;
System.IO.StreamReader rd2 = new System.IO.StreamReader(results);
string xsltSchematronResult = rd2.ReadToEnd();
System.Diagnostics.Debug.WriteLine(xsltSchematronResult);
}
}
}
Transform Class:
using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
using Saxon.Api;
using System.IO;
using System.Xml.Schema;
using System.Collections.Generic;
namespace SOAPonFHIR.Test
{
public class XSLTransform
{
public Stream Transform(Uri xmluri, Uri xsluri)
{
// Create a Processor instance.
Processor processor = new Processor();
// Load the source document
XdmNode input = processor.NewDocumentBuilder().Build(xmluri);
// Create a transformer for the stylesheet.
var compiler = processor.NewXsltCompiler();
compiler.ErrorList = new System.Collections.Generic.List<Exception>();
XsltTransformer transformer = compiler.Compile(xsluri).Load();
if (compiler.ErrorList.Count != 0)
throw new Exception("Exception loading xsl!");
// Set the root node of the source document to be the initial context node
transformer.InitialContextNode = input;
// Create a serializer
Serializer serializer = new Serializer();
MemoryStream results = new MemoryStream();
serializer.SetOutputStream(results);
// Transform the source XML to System.out.
transformer.Run(serializer);
//get the string
results.Position = 0;
return results;
}
public System.IO.Stream Transform(System.IO.Stream xmlstream, System.IO.Stream xslstream)
{
// Create a Processor instance.
Processor processor = new Processor();
// Load the source document
var documentbuilder = processor.NewDocumentBuilder();
documentbuilder.BaseUri = new Uri("file://c:/" );
XdmNode input = documentbuilder.Build(xmlstream);
// Create a transformer for the stylesheet.
var compiler = processor.NewXsltCompiler();
compiler.ErrorList = new System.Collections.Generic.List<Exception>();
compiler.XmlResolver = new XmlUrlResolver();
XsltTransformer transformer = compiler.Compile(xslstream).Load();
if (compiler.ErrorList.Count != 0)
throw new Exception("Exception loading xsl!");
// Set the root node of the source document to be the initial context node
transformer.InitialContextNode = input;
// Create a serializer
Serializer serializer = new Serializer();
MemoryStream results = new MemoryStream();
serializer.SetOutputStream(results);
// Transform the source XML to System.out.
transformer.Run(serializer);
//get the string
results.Position = 0;
return results;
}
}
}
Schematron File
<?xml version="1.0" encoding="utf-8"?>
<iso:schema
xmlns="http://purl.oclc.org/dsdl/schematron"
xmlns:iso="http://purl.oclc.org/dsdl/schematron"
xmlns:dp="http://www.dpawson.co.uk/ns#"
queryBinding='xslt2'
schemaVersion='ISO19757-3'>
<iso:title>Test ISO schematron file. Introduction mode</iso:title>
<iso:ns prefix='dp' uri='http://www.dpawson.co.uk/ns#'/>
<iso:pattern>
<iso:rule context="chapter">
<iso:assert
test="title">A chapter should have a title</iso:assert>
</iso:rule>
</iso:pattern>
</iso:schema>
XML File
<?xml version="1.0" encoding="utf-8" ?>
<doc>
<chapter id="c1">
<title>chapter title</title>
<para>Chapter content</para>
</chapter>
<chapter id="c2">
<title>chapter 2 title</title>
<para>Content</para>
</chapter>
<chapter id="c3">
<title>Title</title>
<para>Chapter 3 content</para>
</chapter>
</doc>
Results:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<svrl:schematron-output xmlns:svrl="http://purl.oclc.org/dsdl/svrl"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:saxon="http://saxon.sf.net/"
xmlns:schold="http://www.ascc.net/xml/schematron"
xmlns:iso="http://purl.oclc.org/dsdl/schematron"
xmlns:xhtml="http://www.w3.org/1999/xhtml"
xmlns:dp="http://www.dpawson.co.uk/ns#"
title="Test ISO schematron file. Introduction mode"
schemaVersion="ISO19757-3"><!--  
 
 
-->
<svrl:ns-prefix-in-attribute-values uri="http://www.dpawson.co.uk/ns#" prefix="dp"/>
<svrl:active-pattern document="file:///c:/"/>
<svrl:fired-rule context="chapter"/>
<svrl:fired-rule context="chapter"/>
<svrl:fired-rule context="chapter"/>
</svrl:schematron-output>

Resolution:
serializer.SetOutputStream(st2);
should be
serializer2.SetOutputStream(st2);

XSLT transformation for Word

I'm writing a web service in .NET C# that takes in an object, converts it to xml, applies an XSLT template, runs the transformation, and returns an MS work file.
Here is the code for the function:
public static HttpResponseMessage Transform(object data)
{
var response = new HttpResponseMessage(HttpStatusCode.OK);
StringWriter stringWriter = new StringWriter();
XmlWriter xmlWriter = XmlWriter.Create(stringWriter);
var applicationDirectory = AppDomain.CurrentDomain.BaseDirectory;
var xsltPath = applicationDirectory + #"\Reporting\Files\Template.xslt";
var templatePath = applicationDirectory + #"\Reporting\Files\Template.docx";
var xmlObject = new System.Xml.Serialization.XmlSerializer(data.GetType());
MemoryStream stream;
using (stream = new MemoryStream())
{
var sw = new StreamWriter(stream);
xmlObject.Serialize(stream, data);
stream.Position = 0;
XslCompiledTransform transform = new XslCompiledTransform();
transform.Load(xsltPath);
using (XmlReader xmlReader = XmlReader.Create(stream))
{
transform.Transform(xmlReader, xmlWriter);
XmlDocument newWordContent = new XmlDocument();
newWordContent.LoadXml(stringWriter.ToString());
var outputPath = applicationDirectory + #"\Reporting\Temp\temp.docx";
System.IO.File.Copy(templatePath, outputPath, true);
using (WordprocessingDocument output = WordprocessingDocument.Open(outputPath, true))
{
Body updatedBodyContent = new Body(newWordContent.DocumentElement.InnerXml);
output.MainDocumentPart.Document.Body = updatedBodyContent;
output.MainDocumentPart.Document.Save();
}
response.Content = new StreamContent(new FileStream(outputPath, FileMode.Open, FileAccess.Read));
response.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");
response.Content.Headers.ContentDisposition.FileName = outputPath;
}
}
return response;
}
When I make a request, it gives me a word file without the data.
I put a breakpoint at using (XmlReader xmlReader = XmlReader.Create(stream)).
After running that line, xmlReader has a value of {None}.
I'm also trying to avoid creating an XML file for efficiency(Hence MemoryStream).
Any idea why this isn't working? And is there a better way of accomplishing this?
Thanks,
Gerson

What happens if you change this:
Body updatedBodyContent = new Body(newWordContent.DocumentElement.InnerXml);
to this:
Body updatedBodyContent = new Body(newWordContent.InnerXml);
or this:
Body updatedBodyContent = new Body(newWordContent.DocumentElement.OuterXml);
The way you have it there would cause the outer element of the transformed XML to be omitted, and I doubt that's what you want (though can't say for sure because you've shown us neither the input XML or the XSLT.

Steps to create XML using XSD and post to URL

I was given a XSD file and sample XML file, and asked to post the XML file to a URL.
Sample XML file
<?xml version="1.0"?>
<pingRequest>
<elt></elt>
...
</pingRequest>
I'm familiar with SOAP and REST, but I have never done posting pure XML file directly. Here is what I got so far.
1) Generate C# class from XSD file
xsd.exe Test.xsd /c
2) Serialize from C# class to XML using XmlSerializer
public string SerializeObject(object obj, Type type)
{
string xml;
var xs = new XmlSerializer(type);
using (var ms = new MemoryStream())
{
xs.Serialize(ms, obj, null);
ms.Position = 0;
using (var sr = new StreamReader(memoryStream))
{
xml = sr.ReadToEnd();
}
}
return xml;
}
OR Should I use LINQ to XML to generate XML file?
3) Post XML to URL using WebClient
var client = new WebClient();
var uri = new Uri("http://www.site.com/");
string responseXML = client.UploadString(uri, requestXML);
Am I at the right track? If not, could you please point me to a right direction? Thanks in advance.

Here is my partial code so that other can use it.
First, created two classes based on XML tags using xsd.exe Test.xsd /c (for both request and response), so that I do not have to prase the XML files manually.
public pingResponse Send()
{
var pingRequest = new pingRequest
{
myelement = "test"
};
// Serialize pingRequest class to xml
var serializer = new Serializer();
string requestXml = serializer.SerializeObject(pingRequest, typeof(pingRequest));
// Post xml
var client = new WebClient();
var uri = new Uri("http://www.site.com/");
string responseXML = client.UploadString(uri, requestXML);
return (pingResponse)serializer.DeserializeObject(xml, typeof(Response));
}
public class Serializer
{
public string SerializeObject(object obj, Type type)
{
var setting = new XmlWriterSettings() {OmitXmlDeclaration = true, Indent = true};
var xml = new StringBuilder();
using (var writer = XmlWriter.Create(xml, setting))
{
var nsSerializer = new XmlSerializerNamespaces();
nsSerializer.Add(string.Empty, string.Empty);
var xmlSerializer = new XmlSerializer(type);
xmlSerializer.Serialize(writer, obj, nsSerializer);
}
return xml.ToString();
}
public object DeserializeObject(string xml, Type type)
{
var xs = new XmlSerializer(type);
var stringReader = new StringReader(xml);
var obj = xs.Deserialize(stringReader);
stringReader.Close();
return obj;
}
}
Note: I do not include the PingRequest and PingResponse classes since my member variables will not be same as yours.