|  | Experimental | 
 Syntax
Syntaxprotected override void OnMessagePartBegin( ContentType contentType, long beginOffset, int beginLineNumber, CancellationToken cancellationToken )
 Remarks
RemarksCalled when the beginning of a message part is encountered in the stream.
This method is always paired with a corresponding call to OnMessagePartEnd(ContentType, Int64, Int32, Int64, Int64, Int32, CancellationToken) when the end of the message part is found.
 See Also
See Also