I'm trying to send any special character in XmlElement, for example, 
via Web-Service.
AFAIK each special character has been encoded in XML
ms-help://MS.MSDNQTR.2004APR.1033/cpguide/html/cpconSpecialCharacterConversionWhenWritingXMLContent.htm
in server side it's ok (special characters are encoded), but when client
retrieve XmlElement, I think, client try to decode special characters from
 and replace them to one symbol , of course XML can't contains
characters such as - smiling face character - and I've got exception.
What I can do in this situation??
See below...
> Are your characters listed in this link:
> http://www.w3.org/TR/REC-html40/sgml/entities.html ?
I didn't find it.