webservice 上传图片、下载图片

    #region 上传图片
    /// <summary>
    /// 上传图片
    /// </summary>
    [WebMethod(Description = "上传图片", EnableSession = true)]
    public bool UploadFile(byte[] fs, string FileName,string oldPricute)
    {
        try
        {
            ///定义并实例化一个内存流，以存放提交上来的字节数组。
            MemoryStream m = new MemoryStream(fs);
            ///定义实际文件对象，保存上载的文件。
            //FileStream f = new FileStream(Server.MapPath(".") + "\\"
            // + FileName, FileMode.Create);
            String path = Function.GetStringValue(Application[BusParameter.PRO_IMAGE_SAVE_POSITION]);
            if (!System.IO.Directory.Exists(path))
                System.IO.Directory.CreateDirectory(path);
            FileStream f = new FileStream(path + "\\" + FileName, FileMode.Create);
            ///把内内存里的数据写入物理文件
            m.WriteTo(f);
            m.Close();
            f.Close();
            f = null;
            m = null;
            //return "文件已经上传成功。";
            if (File.Exists(path + "\\" + "abc" + oldPricute + ".jpg"))
                File.Delete(path + "\\" + "abc" + oldPricute + ".jpg");
            return true;
        }
        catch (Exception ex)
        {
            return false;
            //this.WriteErrorLog(ex);
            //throw new SoapException(ex.Message, SoapException.ServerFaultCode);
        }
    }
    #endregion

//WinForm

        private void button1_Click(object sender, EventArgs e)
        {
                FileInfo fi = new FileInfo(OFDialog.FileName);
                byte[] b = new byte[fi.Length];
                System.IO.FileStream fs = fi.OpenRead();
                fs.Read(b, 0, Convert.ToInt32(fi.Length));
                Services.BASService.UploadFile(b, "abc" + System.Guid.NewGuid() + ".jpg",OldPricute);
        }

下载图片代码：

   
    #region 下载图片
    [WebMethod(Description = "Web 服务提供的方法，返回给定文件的字节数组", EnableSession = true)]        
    public byte[] GetImage(string imgFileName)
    {
        if (String.IsNullOrEmpty(imgFileName))
        {
            throw new ArgumentNullException("File Name Must Input");
        }
        else
        {
            //return GetBinaryImage(Server.MapPath(imgFileName));
            String path = Function.GetStringValue(Application[BusParameter.PRO_IMAGE_SAVE_POSITION]);
            imgFileName = path + "\\" + imgFileName;
            return GetBinaryImage(imgFileName);
        }
    }
    /// <summary>
    /// 返回图档的字节数组
    /// </summary>
    /// <param name="imgFileName"></param>
    /// <returns></returns>
    private byte[] GetBinaryImage(string imgFileName)
    {
        byte[] image;

        if (File.Exists(imgFileName))
        {
            try
            {
                using (FileStream fs = File.OpenRead(imgFileName))
                {
                    image = ConverStreamToByteBuffer(fs);
                }
            }
            catch (ArgumentNullException)
            {
                throw;
            }
            catch (InvalidCastException)
            {
                throw;
            }

        }
        else
        {
            image = new byte[0];
        }
        return image;
    }
    /// <summary>
    /// 把给定的文件流转换为二进制字节数组
    /// </summary>
    /// <param name="fs"></param>
    /// <returns></returns>
    private byte[] ConverStreamToByteBuffer(System.IO.Stream inStream)
    {
        int b1;
        using (MemoryStream ms = new MemoryStream())
        {
            try
            {

                while ((b1 = inStream.ReadByte()) != -1)
                {
                    ms.WriteByte((byte)b1);
                }

            }

            catch (System.InvalidCastException)
            {
                throw;
            }
            return ms.ToArray();
        }
    }
    #endregion

//WinForm

byte[] proImage = Services.BASService.GetImage(string.Format("abc{0}.jpg",this.Pricture));
picProduct.Image = Converter.BytesToBitmap(proImage);//picProduct为pictureBox控件