/*
Create a new linear barcode object in C#.NET,
and change the barcode symbology type to Code 39
 */
BarCode barcode = new BarCode();
barcode.SymbologyType = SymbologyType.Code39;

/*
Assign characters that are encoded into Code 39 barcode symbology.
Encodable character set of Code 39 is as follow,
full alphanumeric A to Z and 0 to 9
special characters: space / $ % . + -
start/stop character: *
*/
barcode.CodeText = "ABC0123";

//Enable checksum for Code 3 of 9 so that the check digit will be calculated automatically
barcode.EnableChecksum = true;

//Set the barcode graphic measurements as Pixel for Code 39
barcode.GraphicsUnit = KeepDynamic.Barcode.Generator.GraphicsUnit.Pixel;

//Set the values of bar width and bar height for Code 39
barcode.X = 1;
barcode.Y = 60;

//Set the margins around the Code 39 symbol
barcode.LeftMargin = 10;
barcode.RightMargin = 10;
barcode.TopMargin = 10;
barcode.BottomMargin = 10;

// Set generated Code 39 barcode image size
barcode.BarCodeWidth = 200;
barcode.BarCodeHeight = 100;

/*
Set the resolution of Code 3of9 image that is drawn to,
and change the orientation of Code39 barcode image
*/
barcode.Resolution = 72;
barcode.Rotate = Rotate.Rotate0;

//Set the wide-to-narrow ratio for Code 39
barcode.WideNarrowRatio = 3.0f;

/*
Display the characters encoded into the Code 39 symbology
Add start and stop characters to Code 3of9 barcode image
Set the font style of the characters encoded into Code 39 barcode
*/
barcode.DisplayCodeText = true;
barcode.DisplayStartStopChar = true;
barcode.CodeTextFont = new System.Drawing.Font("Arial", 11f, System.Drawing.FontStyle.Regular);

/*
Set Code 39 barcode drawing image format to PNG in C#
Generate Code 39 image in C#
*/
barcode.Format = System.Drawing.Imaging.ImageFormat.Png;
barcode.drawBarcode("C://barcode-code39-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);