My Note: Binary File Uploading by Web Serviece

       [WebMethod]
        public void UploadLogFile(byte[] buffer, string filename)
        {
            if (!Directory.Exists("D:\\EEMS\\EHTLog\\" + DateTime.Now.ToString("yyyyMM")))
            {
                Directory.CreateDirectory("D:\\EEMS\\EHTLog\\" +
                DateTime.Now.ToString("yyyyMM"));
            }
            BinaryWriter binWriter = new
            BinaryWriter(File.Open("D:\\EEMS\\EHTLog\\" +
            DateTime.Now.ToString("yyyyMM") + "\\" + filename, FileMode.CreateNew,
            FileAccess.ReadWrite));
            binWriter.Write(buffer);
            binWriter.Close();
        }