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Weird character encoded characters (’) appearing from a feed

I've got a question regarding an XML feed and XSL transformation I'm doing. In a few parts of the outputted feed on an HTML page, I get weird characters (such as ’) appearing on the page.
On another site (that I don't own) that's using the same feed, it isn't getting these characters.
Here's the code I'm using to grab and return the transformed content:
string xmlUrl = "http://feedurl.com/feed.xml";
string xmlData = new System.Net.WebClient().DownloadString(xmlUrl);
string xslUrl = "http://feedurl.com/transform.xsl";
XsltArgumentList xslArgs = new XsltArgumentList();
xslArgs.AddParam("type", "", "specifictype");
string resultText = Utils.XslTransform(xmlData, xslUrl, xslArgs);
return resultText;
And my Utils.XslTransform function looks like this:
static public string XslTransform(string data, string xslurl)
{
TextReader textReader = new StringReader(data);
XmlReaderSettings settings = new XmlReaderSettings();
settings.DtdProcessing = DtdProcessing.Ignore;
XmlReader xmlReader = XmlReader.Create(textReader, settings);
XmlReader xslReader = new XmlTextReader(Uri.UnescapeDataString(xslurl));
XslCompiledTransform myXslT = new XslCompiledTransform();
myXslT.Load(xslReader);
StringBuilder sb = new StringBuilder();
using (TextWriter tw = new StringWriter(sb))
{
myXslT.Transform(xmlReader, new XsltArgumentList(), tw);
}
string transformedData = sb.ToString();
return transformedData;
}
I'm not extremely knowledgeable with character encoding issues and I've been trying to nip this in the bud for a bit of time and could use any suggestions possible. I'm not sure if there's something I need to change with how the WebClient downloads the file or something going weird in the XslTransform.
Thanks!

Give HtmlEncode a try. So in this case you would reference System.Web and then make this change (just call the HtmlEncode function on the last line):
string xmlUrl = "http://feedurl.com/feed.xml";
string xmlData = new System.Net.WebClient().DownloadString(xmlUrl);
string xslUrl = "http://feedurl.com/transform.xsl";
XsltArgumentList xslArgs = new XsltArgumentList();
xslArgs.AddParam("type", "", "specifictype");
string resultText = Utils.XslTransform(xmlData, xslUrl, xslArgs);
return HttpUtility.HtmlEncode(resultText);

The character â is a marker of multibyte sequence (’) of UTF-8-encoded text when it's represented as ASCII. So, I guess, you generate an HTML file in UTF-8, while browser interprets it otherwise. I see 2 ways to fix it:
The simplest solution would be to update the XSLT to include the HTML meta tag that will hint the correct encoding to browser: <meta charset="UTF-8">.
If your transform already defines a different encoding in meta tag and you'd like to keep it, this encoding needs to be specified in the function that saves XML as file. I assume this function took ASCII by default in your example. If your XSLT was configured to generate XML files directly to disk, you could adjust it with XSLT instruction <xsl:output encoding="ASCII"/>.

To use WebClient.DownloadString you have to know what the encoding the server is going use and tell the WebClient in advance. It's a bit of a Catch-22.
But, there is no need to do that. Use WebClient.DownloadData or WebClient.OpenReader and let an XML library figure out which encoding to use.
using (var web = new WebClient())
using (var stream = web.OpenRead("http://unicode.org/repos/cldr/trunk/common/supplemental/windowsZones.xml"))
using (var reader = XmlReader.Create(stream, new XmlReaderSettings { DtdProcessing = DtdProcessing.Parse }))
{
reader.MoveToContent();
//… use reader as you will, including var doc = XDocument.ReadFrom(reader);
}

How to properly get the content of a website?

I'm trying to read the content of the page and extract some information. But sometimes I got stuff like : nbsp;Aur& eacute;lie (Verschuere)
I already do this:
string siteContent = "";
using (System.Net.WebClient client = new System.Net.WebClient())
{
client.Encoding = System.Text.Encoding.UTF8;
siteContent = client.DownloadString(edtReadFromUrl.Text);
}
It works when there are UTF-8 characters. Can't I get a readable text? with no HTML in it? It would be even easier.
Edit: It's not the same as someone marked it. It does return strange characters with the other solution too.

You could use an html parser to extract meaning. For instance, with HtmlAgilityPack, you could:
HtmlDocument doc=new HtmlDocument();
string html;
using(var wc=new WebClient())
{
html=wc.DownloadString("http://www.bbc.co.uk/news");
}
doc.LoadHtml(html);
doc.DocumentNode.Element("html").Element("body").InnerText

Creating variable from XML localhost:8080 source in c#

Ive been using the following code to call up data coming from localhost:8080 in xml format. This part of the code works fine:
private void openP()
{
String sUrl = "http://localhost:8080/GetOpen=";
XmlTextReader rssReader = new XmlTextReader(sUrl.ToString());
XmlDocument rssDoc = new XmlDocument();
WebRequest wrGETURL;
wrGETURL = WebRequest.Create(sUrl);
Stream objStream;
objStream = wrGETURL.GetResponse().GetResponseStream();
StreamReader objReader = new StreamReader(objStream, Encoding.UTF8);
WebResponse wr = wrGETURL.GetResponse();
}
I want to know how I can now use the data that xhttp://localhost:8080/GetOpen= returns as a variable in my program.
for example if I were to goto xhttp://localhost:8080/GetOpen= in a web browser I would see this:
<Response>
<Content>
<Position Symbol="xVAR" Market="blah" >
</Content>
</Response>
how would I go about making xVar a String variable that I can just simply write to a label?
Thanks

Since you're using XmlDocument, then you can use SelectSingleNode() method passing correct XPath to get particular part of the XML :
rssDoc.Load("http://localhost:8080/GetOpen=");
.....
XmlNode symbol = rssDoc.SelectSingleNode("//Position/#Symbol");
String symbolValue = "";
if(symbol != null) symbolValue = symbol.Value;

How to get unicode string with WebClient DownloadData?

Sorry for my bad English.
I am trying to get a string data with this code:
WebClient wc = new WebClient();
byte[] buffer = wc.DownloadData("http://......);
string xml = Encoding.UTF8.GetString(buffer);
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
the string has Unicode data. when I get this with my browser like firefox every things are ok.
But in my code the string is broken and xml file is useless. Some characters changed to their
decimal value and when reading xml file they are only characters that we can read. and others
changed to strange signs.
Do you know how can I do?

Put your data into a stream:
var stream = new MemoryStream(buffer);
And load it with the Load method:
doc.Load(stream);
This will try to detect the correct encoding.
Or maybe WebClient.DownloadString will work as well.

How to Json To Xml

I am new for Json and I have a simple problem.
I am trying to convert json file to xml file with c#. But it throw an exception.
The Code is ;
private void TakeXML()
{
string json = ReadText();
XmlDocument doc = (XmlDocument)Newtonsoft.Json.JsonConvert.DeserializeXmlNode(json);
XmlTextWriter writer = new XmlTextWriter("json.xml", null);
writer.Formatting = Formatting.Indented;
doc.Save(writer);
}
The ReadText function is;
private string ReadText()
{
FileStream fs = new FileStream(#"C:\Users\Sinan\Desktop\bina.json", FileMode.Open, FileAccess.Read);
StreamReader sr = new StreamReader(fs);
string json;
try
{
json = sr.ReadToEnd();
return json;
}
catch (Exception)
{
return null;
}
finally
{
sr.Close();
fs.Dispose();
}
}
for XmlDocument doc = (XmlDocument)Newtonsoft.Json.JsonConvert.DeserializeXmlNode(json); line, it said that;
"JSON root object has multiple properties. The root object must have a single property in order to create a valid XML document. Consider specifing a DeserializeRootElementName."
I am searching to solve this problem but ı haven't found it. İf you help me in this regard, I will be glad. Thank you.

In method DeserializeXmlNode specify the root node name in second parameter as shown in below code:
XmlDocument doc =
(XmlDocument)
Newtonsoft.Json.JsonConvert.DeserializeXmlNode(json, "rootNodeName");
// second parameter
Although if you can give json string then it would be easy to give exact answer.
Reference link: Converting JSON to XML