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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

jquery using c# webclient .net namespace?

I have the following JQUERY code that relates to a html document from a website.
$
Anything is appreciated,
Salute.

From what I can remember using the HtmlAgilityPack
var rawText = "<html><head><head><body><div id='container'><article><p>stuff<p></article><article><p>stuff2</p></article></div></body></html>";
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(rawText);
var stuff = doc.DocumentNode.Descendants("div")
.SelectMany(div => div.Descendants("article"));
var length = stuff.Count();
var textValues = stuff.Select(a => a.InnerHtml).ToList();
Output:
length: 2
textValues: List<String> (2 items)
<p>stuff<p>
<p>stuff2</p>
To get the HTML, instead of hardcoding it as above, use the WebClient class since it has a simplier API than WebRequest.
var client = new WebClient();
var html = client.DownloadString("http://yoursite.com/file.html");

To answer your question specifically related to using the System.Net namespace you would do this:
go here to see the way to use the WebRequest class itself to get the
content.
http://msdn.microsoft.com/en-us/library/456dfw4f%28v=vs.110%29.aspx
Next after you get the content back you need to parse it using HTMLAgility pack found here: http://htmlagilitypack.codeplex.com/
How would one code the JQUERY into C#, this is an untested example:
var doc = new HtmlDocument();
doc.Load(#"D:\test.html"); //you can also use a memory stream instead.
var container = doc.GetElementbyId("continer");
foreach (HtmlNode node in container.Elements("img"))
{
HtmlAttribute valueAttribute = node.Attributes["value"];
if (valueAttribute != null) Console.WriteLine(valueAttribute.Value);
}
In your case the attributes you want after you find the element are alt, src, and href
It will take you about 1 day to learn agilitypack but it's mature fast and well liked by the community.

Is it possible to navigate a site by clicking links and then downloading the correct piece?

I'll try to explain what exactly I mean. I'm working on a program and I'm trying to download a bunch of images automatically from this site.
Namely, I want to download the big square icons from the page you get when you click on a hero name there, for example on the Darius page the image in the top left with the name DariusSquare.png and save that into a folder.
Is this possible or am I asking too much from C#?
Thank you very much!

In general, everything is possible given enough time and money. In your case, you need very little of former and none of latter :)
What you need to do can be described in following high-level steps:
Get all <a> tags within the table with heroes.
Use WebClient class to navigate to URL these <a> tags point to (i.e. to value of href attributes) and download the HTML
You will need to find some wrapper element that is present on each page with hero and that contains his image. Then, you should be able to get to the image src attribute and download it. Alternatively, perhaps each image has an common ID you can use?
I don't think anyone will provide you with an exact code that will perform these steps for you. Instead, you need to do some research of your own.

Yes it's possible, do a C# Web request and use the C# HTML Agility Pack to find the image url.
The you can use another web request to download the image:
Example downloading image from url:
public static Image LoadImage(string url)
{
var backgroundUrl = url;
var request = WebRequest.Create(backgroundUrl);
var response = request.GetResponse();
var stream = response.GetResponseStream();
return Image.FromStream(stream);
}
Example using html agility pack and getting some other data:
var request = (HttpWebRequest)WebRequest.Create(profileurl);
request.Method = "GET";
using (var response = request.GetResponse())
{
using (var stream = response.GetResponseStream())
{
using (var reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
var doc = new HtmlDocument();
doc.Load(new StringReader(result));
var root = doc.DocumentNode;
HtmlNode profileHeader = root.SelectSingleNode("//*[#id='profile-header']");
HtmlNode profileRight = root.SelectSingleNode("//*[#id='profile-right']");
string rankHtml = profileHeader.SelectSingleNode("//*[#id='best-team-1']").OuterHtml.Trim();
#region GetPlayerAvatar
var avatarMatch = Regex.Match(profileHeader.SelectSingleNode("/html/body/div/div[2]/div/div/div/div/div/span").OuterHtml, #"(portraits[^(h3)]+).*no-repeat;", RegexOptions.IgnoreCase);
if (avatarMatch.Success)
{
battleNetPlayerFromDB.PlayerAvatarCss = avatarMatch.Value;
}
#endregion
}
}

Read content of Web Browser in WPF

Hello Developers I want to read external content from Website such as element between tag . I am using Web Browser Control and here is my code however this Code just fills my Web browser control with the Web Page
public MainWindow()
{
InitializeComponent();
wbMain.Navigate(new Uri("http://www.annonymous.com", UriKind.RelativeOrAbsolute));
}

You can use the Html Agility Pack library to parse any HTML formatted data.
HtmlDocument doc = new HtmlDocument();
doc.Load(wbMain.DocumentText);
var nodes = doc.SelectNodes("//a[#href"]);
NOTE: The method SelectNode accepts XPath, not CSS or jQuery selectors.
var node = doc.SelectNodes("id('my_element_id')");

As I understood from your question, you are only trying to parse the HTML data, and you don't need to show the actual web page.
If that is the case than you can take a very simple approach and use HttpWebRequest:
var _plainText = string.Empty;
var _request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
_request.Timeout = 5000;
_request.Method = "GET";
_request.ContentType = "text/plain";
using (var _webResponse = (HttpWebResponse)_request.GetResponse())
{
var _webResponseStatus = _webResponse.StatusCode;
var _stream = _webResponse.GetResponseStream();
using (var _streamReader = new StreamReader(_stream))
{
_plainText = _streamReader.ReadToEnd();
}
}

Try this:
dynamic doc = wbMain.Document;
var htmlText = doc.documentElement.InnerHtml;
edit: Taken from here.