title: Utf7Encoding Text truncation
body: <p>I was having an issue with the Utf7Encoding class truncating the '+4' sequence.
  I would be very interested to know why this was happening. 
  I tried Utf8Encoding for getting string from the byte[] array and it seem to work honky dory.
  Are there any known issues like that with Utf8? Essentially I use the output produced by this conversion to construct html out of rtf string.</p>
  
  <p>Here is the snippet:</p>
  
  <pre><code>    UTF7Encoding utf = new UTF7Encoding(); 
      UTF8Encoding utf8 = new UTF8Encoding(); 
  
      string test = "blah blah 9+4"; 
  
      char[] chars = test.ToCharArray(); 
      byte[] charBytes = new byte[chars.Length]; 
  
      for (int i = 0; i &lt; chars.Length; i++) 
      { 
  
          charBytes[i] = (byte)chars[i]; 
  
       }
  
  
      string resultString = utf8.GetString(charBytes); 
      string resultStringWrong = utf.GetString(charBytes); 
  
      Console.WriteLine(resultString);  //blah blah 9+4  
      Console.WriteLine(resultStringWrong);  //blah 9  
  </code></pre>