C#图像处理（3）：在图像上加条形码

引入Aspose.BarCode用来生成条形码，方法如下：

         /// <summary>
         /// 生成条码
         /// </summary>
         /// <param name="CodeString">生成条码的字符串</param>
         /// <param name="Path">条码保存的路径</param>
         /// <returns>条码保存的路径</returns>
         public bool CreateBarCode(string CodeString, string Path)
         {
             try
             {
                 Aspose.BarCode.BarCodeBuilder builder = new Aspose.BarCode.BarCodeBuilder(CodeString, Symbology.GS1Code128);
                 //string filenameurl = Application.StartupPath + @"\xxx.gif";
                 builder.BorderVisible = false;
                 builder.BarHeight = 10f;
                 builder.BorderWidth = 30f;
                 builder.BorderDashStyle = Aspose.BarCode.BorderDashStyle.Solid;
                 builder.CodeLocation = CodeLocation.Below;
                 MarginsF Margin = new MarginsF(, , , );
                 builder.Margins = Margin;
                 if (!System.IO.File.Exists(Path))
                 {
                     builder.Save(Path);
                 }
                 else
                 {
                     System.IO.File.Delete(Path);
                     builder.Save(Path);
                 }
                 builder.Dispose();
             }
             catch (Exception ex)
             {
                 return false;
             }
             return true; ;
         }

将条形码加入到图片的指定位置：

         /// <summary>
         /// 图片上方加条码，条码将会被180度反转
         /// </summary>
         /// <param name="Img">待处理图片</param>
         /// <param name="ImgBarCode">写入的条码</param>
         /// <param name="UpMargin">180度反转后条码顶部距离上边缘距离</param>
         /// <param name="RightMargin">条码最左边距离右边缘距离</param>
         /// <returns></returns>
         public Bitmap BarCodeUp(Image Img, Image ImgBarCode, int UpMargin, int RightMargin)
         {
             //获取图片宽高
             int Width = Img.Width;
             int Height = Img.Height;
             //获取图片水平和垂直的分辨率
             float dpiX = Img.HorizontalResolution;
             float dpiY = Img.VerticalResolution;
             //创建一个位图文件
             Bitmap BitmapResult = new Bitmap(Width, Height, PixelFormat.Format24bppRgb);
             //设置位图文件的水平和垂直分辨率  与Img一致
             BitmapResult.SetResolution(dpiX, dpiY);
             //在位图文件上填充一个矩形框
             Graphics Grp = Graphics.FromImage(BitmapResult);
             System.Drawing.Rectangle Rec = new System.Drawing.Rectangle(, , Width, Height);
             //向矩形框内填充Img
             Grp.DrawImage(Img, , , Rec, GraphicsUnit.Pixel);

             //平移Graphics对象
             Grp.TranslateTransform(Width - RightMargin, UpMargin);
             //设置Graphics对象的输出角度
             Grp.RotateTransform();
             //设置条码填充颜色
             //Brush brush = Brushes.Black;
             //旋转显示条码
             //Grp.DrawString(WriteString, new Font(FontType, FontSize), brush, 0, 0);
             Grp.DrawImage(ImgBarCode, , );
             //恢复全局变换矩阵
             Grp.ResetTransform();
             Grp.Dispose();
             GC.Collect();
             return BitmapResult;
         }