public void ANSITestLen(string value)
        {
            var bw = new ByteWriter(m_buffer);

            bw.WriteANSI(value);

            var br = new ByteReader(m_buffer);

            Assert.AreEqual(value, br.ReadANSI(value.Length));
            Assert.AreEqual(br.Offset, bw.Offset);
            Assert.AreEqual(value.Length, bw.Offset);
        }