string s = "好";
byte[] ascii = Encoding.ASCII.GetBytes(s); //1字节
byte[] bigUnicode = Encoding.BigEndianUnicode.GetBytes(s);//2字节
byte[] unicode = Encoding.Unicode.GetBytes(s);//2字节
byte[] utf8 = Encoding.UTF8.GetBytes(s);//3字节
byte[] utf7 = Encoding.UTF7.GetBytes(s);//5字节
byte[] gb2312 = Encoding.GetEncoding("GB2312").GetBytes(s);//2字节
FileStream fs1 = new FileStream(@"d:gb2312.txt",FileMode.Create);
fs1.Write(gb2312,0,gb2312.Length);
fs1.Close();
FileStream fs2 = new FileStream(@"d:unicode.txt",FileMode.Create);
fs2.Write(unicode, 0, unicode.Length);
fs2.Close();
FileStream fs3 = new FileStream(@"d:utf8.txt",FileMode.Create);
fs3.Write(utf8,0,utf8.Length);
fs3.Close();