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         }