[C#] BOM 확인 (FileStream)

// BOM 추출하기
 
System.IO.FileStream fs = System.IO.File.OpenRead(xmlFilePath);
byte[] byteOrderMark = new byte[3];
fs.Read(byteOrderMark, 0, 3);
 
if (byteOrderMark[0] == 0xEF && byteOrderMark[1] == 0xBB && byteOrderMark[2] == 0xBF)
{
    // utf-8
}
else if (byteOrderMark[0] == 0xFF && byteOrderMark[0] == 0xFE)
{
    // utf-16
}