欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

C# zxing二维码写入的实例代码

程序员文章站 2023-12-05 21:35:28
复制代码 代码如下:private void button1_click(object sender, eventargs e)   &nbs...

复制代码 代码如下:

private void button1_click(object sender, eventargs e)
        {
            if (string.isnullorempty(this.textbox1.text.trim()))
            {
                messagebox.show("请输入需要转换的信息!");
                return;
            }

            string content = textbox1.text;

            hashtable hints= new hashtable();  
            hints.add(encodehinttype.error_correction, errorcorrectionlevel.l);//纠错级别
            hints.add(encodehinttype.character_set, "utf-8");//编码格式

            bytematrix bytematrix = new multiformatwriter().encode(content, barcodeformat.qr_code, 300, 300, hints);
            bitmap bitmap = tobitmap(bytematrix);
            picturebox1.image = bitmap;

            savefiledialog sfd = new savefiledialog();
            sfd.filter = "*.png|*.png";
            sfd.addextension = true;
            try
            {
                if (sfd.showdialog() == dialogresult.ok)
                {
                    writetofile(bytematrix, system.drawing.imaging.imageformat.png, sfd.filename);
                }
            }
            catch (exception ex)
            {
                messagebox.show(ex.message);
            }

        }


        public static void writetofile(bytematrix matrix, system.drawing.imaging.imageformat format, string file)
        {
            system.drawing.imaging.encoderparameters eps = new system.drawing.imaging.encoderparameters();
            eps.param[0] = new system.drawing.imaging.encoderparameter(system.drawing.imaging.encoder.quality, 100l);
            bitmap bmap = tobitmap(matrix);
            bmap.save(file, format);
        }
        public static bitmap tobitmap(bytematrix matrix)
        {
            int width = matrix.width;
            int height = matrix.height;
            bitmap bmap = new bitmap(width, height, system.drawing.imaging.pixelformat.format32bppargb);
            for (int x = 0; x < width; x++)
            {
                for (int y = 0; y < height; y++)
                {
                    bmap.setpixel(x, y, matrix.get_renamed(x, y) != -1 ? colortranslator.fromhtml("purple") : colortranslator.fromhtml("0xffffffff"));//可以自定义颜色和背景色
                }
            }

            return bmap;    
        }