Monday, 27 September 2010

XML Character Support

One of the projects I'm working on heavily uses a ReST API and performs a lot of XML processing. Recently we've had some serialisation errors when processing some of the XML, resulting in a .Net error throwing:

System.InvalidOperationException: There is an error in XML document (1, XXX). ---> System.Xml.XmlException: XXX, hexadecimal value XXX, is an invalid character.

So I examined the XML payload and could see it contained a non-pritable/control character. I raised the case with the API developers but I found myself curious to find a definitive list of what characters are valid in XML documents. I soon found the Extensible Markup Language (XML) 1.0 Specification, which contained a section regarding the supported XML characters.

You can encode a massive range of characters in XML documents, but there are some non-pritable/control characters that are not supported. Legal non-pritable/control characters include tab (xx09), carriage return (xx0D) and line feed (xx0A). For printable characters it's the legal characters of Unicode and ISO/IEC 10646.

Useful Links

5 comments:

  1. Hey! thanks for useful review. It was easy to read, but I'd like to add that if your company needs to be updated try software development services.

    ReplyDelete
  2. A lot of thanks for this great update. Casino partners always search for online casino affiliate programs to increase their revenue income from best casinos or poker rooms.

    ReplyDelete
  3. Thanks for sharing with us online info. For auto owners who is looking for new cars, compare auto quotes from top auto insurance companies.

    ReplyDelete
  4. Thanks for sharing with us great info. For auto owners who is looking for new cars, compare autoquotes from top auto insurance companies.

    ReplyDelete
  5. We appreciate your help. Turn your attention on cheapest home insurance to help you to save on home policy.

    ReplyDelete