string strReceive=string.Empty;
            //float a = 0.123456f;
            float a = 360.0f;
            byte[] bytetest  =BitConverter.GetBytes(a);       
            int bytelen = bytetest.Length;
            for(int i=0;i<bytelen;i++)
            {
                string str = Convert.ToString(bytetest[i], 16);
                strReceive += str + " ";
            }
            MessageBox.Show(strReceive);

            float f=BitConverter.ToSingle(bytetest,0);
            MessageBox.Show(f.ToString());