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#1 Posted : Wednesday, November 25, 2009 11:12:36 AM(UTC)

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Posts: 1


New user here. I'm having some problems writing a barcode. I'm using C# in Visual Studio .Net with the 64 bit LeadTools assemblies. The code below just renders a black image with no barcode. Any help would be greatly appreciated.

 public void GenerateBarcode(Stream stream, string code, int width, int height, bool vert)
                Rectangle rect = new Rectangle(0, 0, width, height);
                using (Bitmap bmp = new Bitmap(width, height))
                    using (MemoryStream ms = new MemoryStream())
                        // Save image to stream.
                        bmp.Save(stream, ImageFormat.Tiff);
                        stream.Seek(0, 0);
                        RasterImage rasterImage = _codecs.Load(stream);

                        BarcodeData writeData = new BarcodeData();
                        writeData.Data = ASCIIEncoding.ASCII.GetBytes(code);
                        writeData.Location = rect;
                        writeData.SearchType = BarcodeSearchTypeFlags.Barcode1dCode128;
                        writeData.Unit = BarcodeUnit.ScanlinesPerPixels;

                        BarcodeColor writeColor = new BarcodeColor();
                        writeColor.BarColor = Color.Black;
                        writeColor.SpaceColor = Color.White;

                        Barcode1d bar1d = new Barcode1d();
                        bar1d.Direction = BarcodeDirectionFlags.Horizontal;
                        bar1d.OutShowText = true;
                        bar1d.ErrorCheck = true;
                        bar1d.StandardFlags = Barcode1dStandardFlags.Barcode1dMsiModulo10 |
                            Barcode1dStandardFlags.Barcode1dFast |

                        BarcodeWritePdf barPDF = new BarcodeWritePdf();
                        BarcodeWriteDatamatrix barDM = new BarcodeWriteDatamatrix();
                        barDM.Justify = BarcodeJustifyFlags.Right;
                        barDM.FileIdHigh = 0;
                        barDM.FileIdLow = 0;
                        barDM.GroupNumber = 0;
                        barDM.GroupTotal = 0;
                        barDM.XModule = 0;

                        BarcodeWriteQr barQR = new BarcodeWriteQr();

                        _barEngine.Write(rasterImage, writeData, writeColor, BarcodeWriteFlags.None, bar1d, barPDF, barDM, barQR, Rectangle.Empty);          

                        if (vert)
                        bmp.Save(stream, ImageFormat.Jpeg);
            catch (Exception exc)

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#2 Posted : Monday, November 30, 2009 6:22:44 AM(UTC)


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Posts: 3,022

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In the code above you are saving the bmp object to file, but the barcode is written to the rasterImage object. Since nothing is done to the bmp object, it will be black when you save it. So you will have to do: _codecs.Save(rasterImage, stream, RasterImageFormat.Jpeg, 0); instead of bmp.Save(stream, ImageFormat.Jpeg);.

Let me know if you have any questions.

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