How to print a barcode using ASP.NET web application?

Question

I am able to generate and display the barcode but unable to print the barcode.

Shrimant Telgave · Answer

Hello Pravat, Best example of barcode generate in asp.net as follow: https://www.c-sharpcorner.com/blogs/how-to-generate-barcode-in-asp-net http://www.barcodelib.com/asp_net/barcode_aspnet_csharp.html Code: BarcodeLib.Barcode.Linear barcode = new BarcodeLib.Barcode.Linear(); barcode.Type = BarcodeType.CODE128; barcode.Data = "CODE128" ; barcode.LeftMargin = 0; barcode.RightMargin = 0; barcode.TopMargin = 0; barcode.BottomMargin = 0; barcode.Resolution = 72; barcode.Rotate =RotateOrientation.BottomFacingDown; barcode.UOM = UnitOfMeasure.PIXEL; // other barcode settings. // save barcode image into your system barcode.drawBarcode( "c:/csharp-barcode.png" ); // generate barcode & output to byte array byte [] barcodeInBytes = barcode.drawBarcodeAsBytes(); // generate barcode to Graphics object Graphics graphics = ... barcode.drawBarcode(graphics); // generate barcode and output to Bitmap object Bitmap barcodeInBitmap = barcode.drawBarcode(); // generate barcode and output to HttpResponse object HttpResponse response = ...; barcode.drawBarcode(response); // generate barcode and output to Stream object Stream stream = ...; barcode.drawBarcode(stream);

Pravat Kumar · Answer

Hi Mohamed, I am able to generate multiple barcodes for the single inventory on my local machine(Localhost) for the Zebra printer(size 226 width,113 height), but when I am hosting that application on the production server, I am getting the exception "no printers are installed".

Mohamed Abedallah · Answer

Your question is not clear about the printing problem you are facing. However, if you are generating barcodes using barcode fonts and you don't want to rely on them, you can generate barcode as images at the server side using LEADTOOLS library which supports generating most types of 1D and 2D barcodes. Check this link: https://www.leadtools.com/support/forum/posts/t11099-HOW-TO--Implement-HTML5-and-Javascript-with--NET-Code-Behind-to-Read-and-Write- The server-side code will be similar to this: try { BarcodeEngine barcodeEngine = new BarcodeEngine(); BarcodeWriter barcodeWriter = barcodeEngine.Writer; BarcodeData barcodeData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix); barcodeData.Value = data; barcodeWriter.CalculateBarcodeDataBounds(LogicalRectangle.Empty, image.XResolution, image.YResolution, barcodeData, null ); barcodeWriter.WriteBarcode(image, barcodeData, null ); using (RasterCodecs codecs = new RasterCodecs()) { codecs.Save(image, imageFile, RasterImageFormat.Png, 0); } } catch (Exception ex) { return ex.Message; }

Jeeva Subburaj · Answer

provide more details about the what type of bar code you are using and make sure the bar code font is supported by the printer.