C# 返回圖片的位元組流byte[]

#region 返回圖片的位元組流byte[]        /// <summary>        /// 返回圖片的位元組流byte[]        /// </summary>        ///<param name="imagePath">        ///<param name="webClient">        /// <returns></returns>        public static byte[] getImageByte(string imagePath, WebClient webClient)        {            byte[] imgByte = null;            try            {                //MessageBox.Show("getImageByte");                //Stopwatch stopwatch = new Stopwatch();                //stopwatch.Start();                //DateTime dateStart = DateTime.Now;                 if (PubFunc.UrlDiscern(imagePath))                {                    Bitmap bt = new Bitmap(webClient.OpenRead(imagePath));                    imgByte = PubFunc.ImgToByte(bt);                }                else                {                    using (FileStream files = new FileStream(imagePath, FileMode.Open))                    {                        imgByte = new byte[files.Length];                        files.Read(imgByte, 0, imgByte.Length);                        files.Close();                    }                }                //stopwatch.Stop();                //MessageBox.Show((DateTime.Now - dateStart).TotalMilliseconds.ToString());             }            catch (Exception ee)            {                MessageBox.Show(ee.ToString());            }            return imgByte;        }        #endregion

#region 圖片轉換成位元組流      /// <summary>      /// 圖片轉換成位元組流      /// </summary>      ///<param name="img">要轉換的Image對象      /// <returns>轉換後返回的位元組流</returns>      public static byte[] ImgToByte(Image img)      {          try          {              using (MemoryStream ms = new MemoryStream())              {                  byte[] imagedata = null;                  img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);                  imagedata = ms.GetBuffer();                  return imagedata;              }          }          catch (Exception ee)          {              MessageBox.Show(ee.ToString());              return null;          }      }      #endregion

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