quickfix/n how to change the encoding from iso-8859-1 to windows-1251 about quickfixn HOT 6 OPEN

~/dev/quickfixn/QuickFIXn$ cat CharEncoding.cs; grep -A5 " Send(" SocketReader.cs SocketInitiatorThread.cs 
namespace QuickFix
{
    public static class CharEncoding
    {
        public static System.Text.Encoding DefaultEncoding;

        static CharEncoding()
        {
            DefaultEncoding = System.Text.Encoding.GetEncoding("iso-8859-1");
        }
    }
}
SocketReader.cs:        public int Send(string data)
SocketReader.cs-        {
SocketReader.cs-            byte[] rawData = CharEncoding.DefaultEncoding.GetBytes(data);
SocketReader.cs-            stream_.Write(rawData, 0, rawData.Length);
SocketReader.cs-            return rawData.Length;
SocketReader.cs-        }
--
SocketInitiatorThread.cs:        public bool Send(string data)
SocketInitiatorThread.cs-        {
SocketInitiatorThread.cs-            byte[] rawData = CharEncoding.DefaultEncoding.GetBytes(data);
SocketInitiatorThread.cs-            stream_.Write(rawData, 0, rawData.Length);
SocketInitiatorThread.cs-            return true;
SocketInitiatorThread.cs-        }

public static class CharEncoding
    {
        public static System.Text.Encoding Default Encoding;

        static Char Encoding()
        {
            ////Default Encoding = System.Text.Encoding.GetEncoding("iso-8859-1");
            Default Encoding = System.Text.Encoding.GetEncoding(1251);
        }
    }