Регулярные выражения - некорректно парсится HTML-страница - C#

Формулировка задачи:

Здравствуйте,битый день пытаюсь понять почему не работает выражение.Есть html файл, нужно вытащить текст из body.

                    Листинг программы
                
pattern = "(<body>[^<>]+?).</body>*>";

Сам файл:

                    Листинг программы
                
 
                            
                        
<html xmlns:user="http://mycompany.com/mynamespace" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:msxsl="urn:schemas-microsoft-com:xslt">
  <head>
    <META http-equiv="Content-Type" content="text/html; charset=utf-8">
    <link href="http://yastatic.net/highlightjs/8.2/styles/solarized_light.min.css" rel="stylesheet"><script src="http://yastatic.net/highlightjs/8.2/highlight.min.js"></script><script type="text/javascript">hljs.initHighlightingOnLoad();</script><link rel="stylesheet" type="text/css" href="how_to.css">
    <body>
      <p>текст</p>
      <div class="......">
      
        Operating system: Windows XP (both 32-bit and 64-bit editions), Microsoft Windows Server 2003 (both 32-bit and 64-bit editions), Microsoft Windows 2000
    </div>
    <div class="aqWhatitdoes">
      The script below invokes the Open File dialog.
    </div>
    <div class="aqCode">
        <div class="aqCodeSegment">
          <p class="aqCodeHeader" style="background-image: url(.....gif);"><span class="aqLangID" name="aqLangID" id="aqLangID">VBScript</span><div id="ID0E2_divcodeseg">
              <pre><code class="vbs">Sub Test
  Dim i, openDialog, files
  
  'Microsoft Common Dialog Control
  Set openDialog = CreateObject("MSComDlg.CommonDialog") 
  With openDialog
    .DialogTitle = "Open my files..."
    .InitDir = "C:\WINDOWS\"
    .Filter = "All files (*.*)|*.*|Programs (*.com,*.exe)|*.com;"&amp;_
              "*.exe|Text (*.txt,*.log)|*.txt;*.log"
    .FilterIndex = 2
    .Flags = 2621952
    .MaxFileSize =32000
    .ShowOpen
    Filename = .Filename
  End With
 
  If (Len(openDialog.FileName)= 0) Then
    Log.Error("Files were not selected")
    Exit Sub
  End If
 
  files = Split(openDialog.Filename, vbNullChar)
  If 0 = UBound(files) Then
    Log.Message("The " &amp; files(0) &amp; " file was selected")   
  Else
    For i = 1 To UBound(files)
      Log.Message("The " &amp; files(0) &amp; "\" &amp; files(i) &amp; " file was selected")
    Next
  End If
End Sub</code></pre>
            </div>
          </p>
        </div>
        <div class="aqCodeSegment">
          <p class="aqCodeHeader" style="background-image: url(/images/support/kb/data/2009/11/30/codeHeader.gif);"><span class="aqLangID" name="aqLangID" id="aqLangID">JScript</span><div id="ID0E5_divcodeseg">
              <pre><code class="jsp">function Test()
{  
  // Microsoft Common Dialog 
  var openDialog = new ActiveXObject("MSComDlg.CommonDialog"); 
  openDialog.DialogTitle = "Open my files..."; 
  openDialog.InitDir = "C:\\WINDOWS\\"; 
  openDialog.Filter = "All files (*.*)|*.*|Programs (*.com,*.exe)|" +
                      "*.com;*.exe|Text (*.txt,*.log)|*.txt;*.log"; 
  openDialog.FilterIndex = 2; 
  openDialog.Flags = 2621952; 
  openDialog.MaxFileSize = 32000; 
  openDialog.ShowOpen();  
  
  if (0 == openDialog.FileName.length) {
    Log.Error("Files were not selected");
    return;
  }
  
  var files = openDialog.Filename.split("\0");
  if(1 == files.length) {
    Log.Message("The " + files[0] + " file was selected");
  }
  else {
    for(var i = 1; i &lt; files.length; i++) {
      Log.Message("The " + files[0] + "\\" + files[i] + " file was selected");
    }
  }
}</code></pre>
            </div>
          </p>
        </div>
      </div>
    </body>
  </head>
</html>

То есть соответственно такой же патер по

работает

Решение задачи: «Регулярные выражения - некорректно парсится HTML-страница»

textual
                            Листинг программы 
                        
var webClient = new System.Net.WebClient();
string URL = "http://site.ru";
string HTML = webClient.DownloadString(URL);
Match match = Regex.Match(HTML, "<body>(.*)</body>");
string result=match.Success ? match.Groups[1].Value : "Не найдено";