/*
Create a new linear barcode object in C#.NET
and select the barcode symbology as UPC-A from the barcode type list
*/
BarCode barcode = new BarCode();
barcode.SymbologyType = SymbologyType.UPCA;

/*
Set the data characters that are encoded into UPC-A barcode symbology.
Valid data set of UPC-A consists of,
Numeric Digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
UPC-A barcode encodes a fixed data length of 11 data digits plus 1 check digit
*/
barcode.CodeText = "12345678901";

/*
Enbable the checksum option for UPC-A
so that the barcode generator computes check digit to UPC-A automatically
*/
barcode.EnableChecksum = true;

//Set the barcode graphic measurements as Pixel for UPC-A
barcode.GraphicsUnit = KeepDynamic.Barcode.Generator.GraphicsUnit.Pixel;

//Assign values of bar width and bar height to UPC-A barcode
barcode.X = 1;
barcode.Y = 75;

// Set barcode symbol width & height of generated UPC-A barcode
barcode .BarCodeWidth =140;
barcode .BarCodeHeight =120;

//Set the margins around the UPC-A symbol
barcode.LeftMargin = 10;
barcode.RightMargin = 10;
barcode.TopMargin = 10;
barcode.BottomMargin = 10;

/*
Assign a value to resolution for UPC-A image that is drawn to,
and change the orientation of UPC-A barcode image
*/
barcode.Resolution = 72;
barcode.Rotate = Rotate.Rotate0;

/*
Display the characters encoded into the UPC-A symbology and
set the font style of the characters encoded into EAN128
*/
barcode.DisplayCodeText = true;
barcode.CodeTextFont = new System.Drawing.Font("Arial", 11f, System.Drawing.FontStyle.Regular);

/*
Set UPC-A barcode drawing image format to PNG in C# and
generate UPC-A image in C#
*/
barcode.Format = System.Drawing .Imaging .ImageFormat.Png;
barcode.drawBarcode("C://barcode-upca-csharp.png");

// other barcode outputting ways:
// output generated barcode to byte array
byte[] barcodeInBytes = barcode.drawBarcodeAsBytes();
    
// output generated barcode to Graphics object
Graphics graphics = ...;
barcode.drawBarcode(graphics);
    
// output generated barcode to Bitmap object
Bitmap barcodeInBitmap = barcode.drawBarcode();
    
// draw created barcode to HttpResponse object
HttpResponse response = ...;
barcode.drawBarcode(response);
    
// save generated barcode images to Stream object
Stream stream = ...;
barcode.drawBarcode(stream);