给图片加水印

 public void DoAddMark(object ParameterInfo)
        {
            #region  拆分参数

            List<object> listParameter = (List<object>)ParameterInfo;
            ConnParameter connpar = (ConnParameter)listParameter[0];                                           //连接数据库参数
            string[] strImgPath = (string[])listParameter[1];                                             //图片源路径                     
            string[] strTargeFilePath = (string[])listParameter[2];                                         //目标路径

            #endregion

            //通知主界面，我已经开始了，strImgPath.Length表示进度条最大值
            // threadStartEvent.Invoke(strImgPath.Length, new EventArgs());
            //遍历strImgPath
            string strThreadName = Thread.CurrentThread.Name.ToString();
            DateTime dateTimeStart = DateTime.Now;
            List<object> ListStart = new List<object>();
            List<object> ListNow = new List<object>();
            List<object> ListEnd = new List<object>();
            ListStart.Add(strThreadName);
            ListStart.Add(strImgPath.Length);
            threadStartEvent.Invoke((object)ListStart, new EventArgs());
            Log.LogInfo(Thread.CurrentThread.Name.ToString(), DateTime.Now + " ======= " + Thread.CurrentThread.Name.ToString() + " ======= " + strImgPath.Length + " 张图片========================================");
            try
            {
                for (int num = 1; num <= strImgPath.Length; num++)
                {
                    ListNow.Clear();
                    string strSourseImgPath = strImgPath[num - 1].ToString();                    //源文件夹目标
                    string[] strSourseImgPathSplit = strSourseImgPath.Split('\');
                    string strSourseImgIdAndType=strSourseImgPathSplit[strSourseImgPathSplit.Length - 1].ToString ();
                    string[] strImgIdSplit = strSourseImgIdAndType.Split('.');



                    string strImgId = strSourseImgIdAndType.Substring(0, strSourseImgIdAndType.Length - strImgIdSplit[strImgIdSplit.Length-1].Length-1);                  //图片Id
                    if (Directory.Exists(strTargeFilePath[num - 1]) == false)
                    {
                        Directory.CreateDirectory(strTargeFilePath[num - 1]);
                    }
                    string strTargetImaPath = strTargeFilePath[num - 1] + @"" + strImgId + ".jpg";     //目标路径
                    //加水印
                    PictureAddMark(connpar, num, strImgId, strSourseImgPath, strTargetImaPath);

                    //通知主界面，我正在执行，num表示进度条当前进度
                    ListNow.Add(strThreadName);
                    ListNow.Add(num);
                    nowValue.Invoke((object)ListNow, new EventArgs());
                }
                DateTime dateTimeEnd = DateTime.Now;
                string strTimeDiff = string.Empty;
                strTimeDiff = DateDiff(dateTimeStart, dateTimeEnd);
                ListEnd.Add(strThreadName);
                ListEnd.Add(strTimeDiff);
                threadEndEvent.Invoke((object)ListEnd, new EventArgs());
                Log.LogInfo(Thread.CurrentThread.Name.ToString(), "==========================================================================================================");
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message.ToString());
            }
        }


        /// <summary>
        /// 获取线程的执行时间
        /// </summary>
        /// <param name="TimeStart">此线程的开始时间</param>
        /// <param name="TimeEnd">此线程执行任务结束后的时间</param>
        /// <returns>差值</returns>
        private string DateDiff(DateTime TimeStart, DateTime TimeEnd)
        {
            string dateDiff = string.Empty;
            TimeSpan ts = TimeStart.Subtract(TimeEnd).Duration();
            dateDiff = ts.Hours.ToString() + "h" + ts.Minutes.ToString() + "m" + ts.Seconds.ToString() + "s";
            return dateDiff;
        }

        /// <summary>
        /// 加水印操作
        /// </summary>
        /// <param name="ImgId">图片Id</param>
        /// <param name="SoursePath">源图片路径</param>
        /// <param name="TargePath">目标路径，即加水印之后的保存路径。</param>
        public static void PictureAddMark(ConnParameter cp, int ImgNum, string ImgId, string SoursePath, string TargePath)
        {
            #region   方法声明

            AddWatermark awd = new AddWatermark();                                             //加水印
            AddThreePoints atp = new AddThreePoints();                                         //取三点

            #endregion
            try
            {
                //取三点
                ShoesSign ss = atp.GetShoesSign(SoursePath);
                using (Bitmap imgPhoto = new Bitmap(Image.FromFile(SoursePath)))
                {
                    //加水印处理
                    using (Bitmap ImageMark = awd.GetPictureWithWatermark(imgPhoto))
                    {
                        //设置加水印之后图片的大小，bitmap,存储目录,图片质,如果bitmap不空并且图片大小转换成功则写日志
                        if (ImageMark != null&&KiSaveAsJPEG(ImageMark, TargePath, 60)==true)
                        {
                            //写日志
                            string strCurrentThreadName = Thread.CurrentThread.Name.ToString();
                            switch (strCurrentThreadName.Trim())
                            {
                                case "thread1":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                                case "thread2":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                                case "thread3":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                                case "thread4":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                                case "thread5":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                                case "thread6":
                                    Log.LogInfo(strCurrentThreadName, DateTime.Now + " " + strCurrentThreadName + "  " + SoursePath + " 第" + ImgNum + "张加水印成功");
                                    break;
                            }
                            //更新Shoes_Base信息
                            UpdateTable.UpdateShoes_Base(cp, ImgId);
                            //加三点信息
                            atp.ImageWriteThreePoints(ss, TargePath);
                        }
                        //释放资源
                        ImageMark.Dispose();
                    }
                    //释放资源
                    imgPhoto.Dispose();
                }
            }
            catch (Exception ex)
            {
                //失败日志
                Log.LogInfo(Thread.CurrentThread.Name.ToString(), "ERROR   "+DateTime.Now + " " + Thread.CurrentThread.Name.ToString() + " " + SoursePath + "加水印失败. " + ex.Message.ToString());
            }
        }

        /// <summary>
        /// 保存JPG时用
        /// </summary>
        /// <param name="mimeType"></param>
        /// <returns></returns>
        private static ImageCodecInfo GetCodecInfo(string mimeType)
        {
            ImageCodecInfo[] CodecInfo = ImageCodecInfo.GetImageEncoders();
            foreach (ImageCodecInfo ici in CodecInfo)
            {
                if (ici.MimeType == mimeType) return ici;
            }
            return null;
        }

        /// <summary>
        /// 保存为JPEG格式，支持压缩质量选项
        /// </summary>
        /// <param name="bmp">生成的bitmap</param>
        /// <param name="FileName">保存目录</param>
        /// <param name="Qty">图片质量</param>
        /// <returns></returns>
        public static bool KiSaveAsJPEG(Bitmap bmp, string FileName, int Qty)
        {
            try
            {
                EncoderParameter p;
                EncoderParameters ps;
                ps = new EncoderParameters(1);
                p = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, Qty);
                ps.Param[0] = p;
                bmp.Save(FileName, GetCodecInfo("image/jpeg"), ps);
                return true;
            }
            catch
            {
                return false;
            }
        }
    }

前几天应公司要求，要求做一个给图片加水印的工具，开始用的单线程。但后来发现测试的图片有200G，几十万个图片，于是乎采用多线程。废话不说，直接上图