A barcode encodes text as structured visual marks that can be generated and returned from a web endpoint as an image. section 3.1.2
A production-oriented barcode endpoint must:
- Install BarcodeLib 2.4.0 and generate the barcode with a selected symbology such as CODE128. section 3.1.2
- Choose image format and foreground and background colors before returning encoded image bytes. section 3.1.2
- Validate input because barcode types impose different restrictions, including numeric-only requirements. section 3.1.2
using BarcodeLib; #1
using System.Drawing; #2
using System.Drawing.Imaging; #3
app.MapGet("/barcode/{text}", (string text) => { #4
var barcode = new Barcode(); #5
barcode.ImageFormat = ImageFormat.Jpeg; #6
_ = barcode.Encode( #7
TYPE.CODE128, #8
text, #9
Color.Black, #10
Color.White); #11
return Results.File( #12
barcode.Encoded_Image_Bytes, #13
"image/jpeg"); #14
});
The focused endpoint listing shows BarcodeLib construction, CODE128 encoding, JPEG configuration, color selection, and Results.File output. section 3.1.2
