C# UPC-A barcode generator: how to calculate, generate UPC barcode with check digit, c# example source code

     BarCode upca = new BarCode();
     // Set barcode symbology type to UPCA, UPCASup2, UPCASup5
     upca.Symbology = KeepAutomation.Barcode.Symbology.UPCASup2;
     // Set UPC-A encoding code value. Valid input: 0-9. Length: 11 digits without checksum.
     upca.CodeToEncode = "11223344551";
     // Unit of measure, Pixel, Cm and Inch supported.
     upca.BarcodeUnit = BarcodeUnit.Pixel;
     // UPC-A image resolution in DPI.
     upca.DPI = 72;

     //Apply checksum for UPC-A barcode.
     upca.ChecksumEnabled = true;
     // Display checksum in the UPC-A barcode text
     upca.DisplayChecksum = true;

     // Set UPC-A image size

     // UPC-A bar module width (X dimention), default value is 1 pixel.
     upca.X = 2;
     // UPC-A bar module height (Y dimention), default is 50 pixel.
     upca.Y = 60;
     // Image left margin size, 10X is automatically added to go with specification.
     upca.LeftMargin = 0;
     // Image right margin size, 10X is automatically added to go with specification.
     upca.RightMargin = 0;
     // UPC-A image top margin size
     upca.TopMargin = 0;
     // UPC-A image bottom margin size
     upca.BottomMargin = 0;
     // UPC-A orientation, 90, 180, 270 degrees supported
     upca.Orientation = KeepAutomation.Barcode.Orientation.Degree0;

     // UPC-A supplement code of 2 or 5 digits
     upca.SupplementCode = "02";
     // UPC-A supplement bar height vs primary bar height ratio.
     upca.SupplementHeight = 0.7f;
     // Space between barcode and supplement barcode
     upca.SupplementSpace = 15;

     // Set UPC-A human readable text style

     // Display human readable text
     upca.DisplayText = true;
     upca.TextFont = new Font("Arial", 10f, FontStyle.Regular);
     // Space between barcode and text
     upca.TextMargin = 6;

     // enerate UPC-A barcodes in image format JPEG
     upca.generateBarcodeToImageFile("C://barcode-upca-csharp.jpeg");

     /* Create UPC-A barcodes in Stream object
     upca.generateBarcodeToStream(".NET System.IO.Stream Object");

     Draw & Print UPC-A barcodes to Graphics object
     upca.generateBarcodeToGraphics(".NET System.Drawing.Graphics Object");

     Generate UPC-A barcodes & write to byte[]
     byte[] barcodeInBytes = upca.generateBarcodeToByteArray();

     Bitmap barcodeInBitmap = upca.generateBarcodeToBitmap();
     */