Dealing with invalid XML hexadecimal characters

Question

I\'m trying to send an XML document over the wire but receiving the following exception:

\"MY LONG EMAIL STRING\" was specified for the \'Body\' element. ---         


        

Answer 1

The following code removes XML invalid characters from a string and returns a new string without them:

public static string CleanInvalidXmlChars(string text) 
{ 
     // From xml spec valid chars: 
     // #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]     
     // any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. 
     string re = @"[^\x09\x0A\x0D\x20-\xD7FF\xE000-\xFFFD\x10000-x10FFFF]"; 
     return Regex.Replace(text, re, ""); 
}