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：

 1         /// <summary>

 2         /// 生成条码

 3         /// </summary>

 4         /// <param name="CodeString">生成条码的字符串</param>

 5         /// <param name="Path">条码保存的路径</param>

 6         /// <returns>条码保存的路径</returns>

 7         public bool CreateBarCode(string CodeString, string Path)

 8         {

 9             try

10             {

11                 Aspose.BarCode.BarCodeBuilder builder = new Aspose.BarCode.BarCodeBuilder(CodeString, Symbology.GS1Code128);

12                 //string filenameurl = Application.StartupPath + @"\xxx.gif";

13                 builder.BorderVisible = false;

14                 builder.BarHeight = 10f;

15                 builder.BorderWidth = 30f;

16                 builder.BorderDashStyle = Aspose.BarCode.BorderDashStyle.Solid;

17                 builder.CodeLocation = CodeLocation.Below;

18                 MarginsF Margin = new MarginsF(1, 1, 0, 0);

19                 builder.Margins = Margin;

20                 if (!System.IO.File.Exists(Path))

21                 {

22                     builder.Save(Path);

23                 }

24                 else

25                 {

26                     System.IO.File.Delete(Path);

27                     builder.Save(Path);

28                 }

29                 builder.Dispose();

30             }

31             catch (Exception ex)

32             {

33                 return false;

34             }

35             return true; ;

36         }

 

将条形码加入到图片的指定位置：

 1         /// <summary>

 2         /// 图片上方加条码，条码将会被180度反转

 3         /// </summary>

 4         /// <param name="Img">待处理图片</param>

 5         /// <param name="ImgBarCode">写入的条码</param>

 6         /// <param name="UpMargin">180度反转后条码顶部距离上边缘距离</param>

 7         /// <param name="RightMargin">条码最左边距离右边缘距离</param>

 8         /// <returns></returns>

 9         public Bitmap BarCodeUp(Image Img, Image ImgBarCode, int UpMargin, int RightMargin)

10         {

11             //获取图片宽高

12             int Width = Img.Width;

13             int Height = Img.Height;

14             //获取图片水平和垂直的分辨率

15             float dpiX = Img.HorizontalResolution;

16             float dpiY = Img.VerticalResolution;

17             //创建一个位图文件

18             Bitmap BitmapResult = new Bitmap(Width, Height, PixelFormat.Format24bppRgb);

19             //设置位图文件的水平和垂直分辨率  与Img一致

20             BitmapResult.SetResolution(dpiX, dpiY);

21             //在位图文件上填充一个矩形框

22             Graphics Grp = Graphics.FromImage(BitmapResult);

23             System.Drawing.Rectangle Rec = new System.Drawing.Rectangle(0, 0, Width, Height);

24             //向矩形框内填充Img

25             Grp.DrawImage(Img, 0, 0, Rec, GraphicsUnit.Pixel);

26 

27 

28             //平移Graphics对象

29             Grp.TranslateTransform(Width - RightMargin, UpMargin);

30             //设置Graphics对象的输出角度

31             Grp.RotateTransform(180);

32             //设置条码填充颜色

33             //Brush brush = Brushes.Black;

34             //旋转显示条码

35             //Grp.DrawString(WriteString, new Font(FontType, FontSize), brush, 0, 0);

36             Grp.DrawImage(ImgBarCode, 0, 0);

37             //恢复全局变换矩阵

38             Grp.ResetTransform();

39             Grp.Dispose();

40             GC.Collect();

41             return BitmapResult;

42         }