c# Detect xml encoding from Byte Array?

Question

Well i have a byte array, and i know its a xml serilized object in the byte array is there any way to get the encoding from it?

Im not going to deserilize it but im

Answer 1

The first 2 or 3 bytes may be a Byte Order Mark (BOM) which can tell you whether the stream is UTF-8, Unicode-LittleEndian or Unicode-BigEndian.

UTF-8 BOM is 0xEF 0xBB 0xBF Unicode-Bigendian is 0xFE 0xFF Unicode-LittleEndiaon is 0xFF 0xFE

If none of these are present then you can use ASCII to test for (note most modern XML generation sticks to the standard that no white space may preceed the xml declare).

ASCII is used up until ?> so you can find the presence of encoding= and find its value. If encoding isn't present or declare is not present then you can assume UTF-8.