WebService上传图片

WebService端：

    /// <summary>
        /// 上传文件到远程服务器
        /// </summary>
        /// <param name="fileBytes"></param>
        /// <param name="fileName"></param>
        /// <returns></returns> 
        [WebMethod(Description = "上传文件到远程服务器.")]
        public string UploadFile(byte[] fileBytes,string fileName)
        {
            try
            {
                MemoryStream memoryStream = new MemoryStream(fileBytes); //1.定义并实例化一个内存流，以存放提交上来的字节数组。
                FileStream fileUpload = new FileStream(Server.MapPath(".") + "" + fileName,FileMode.Create); ///2.定义实际文件对象，保存上载的文件。
                memoryStream.WriteTo(fileUpload); ///3.把内存流里的数据写入物理文件
                memoryStream.Close();
                fileUpload.Close();
                fileUpload = null;
                memoryStream = null;
                return "文件已经上传成功";
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }