Barcode.dll is a powerful .NET component for creating barcode images.
You can easily integrate barcodes with your application using any .NET language or COM.
It was written entirely in managed code.

Online demo is available.

Features:
Image output in many formats such as: BMP, EMF, GIF, JPEG, PNG, TIFF and WMF,
Barcode rotation,
Quiet zones can be set programmatically or automatically,
You can also define any custom text,
Windows and ASP.NET controls are included,
It supports most barcode symbologies,
COM support.

Standards supported:
Code39,
Code39Ext - Full ASCII mode,
Code128,
UCC/EAN-128 (also known as: GS1-128, EAN-128, UCC-128, EAN128, UCC128),
EAN-13,
EAN-8,
Interleaved 2 of 5 (also known as: ITF, USS ITF 2/5, I-2/5),
Standard 2 of 5 (also known as Industrial 2 of 5),
UPC-A,
UPC-E,
Code93 (also known as LOGMARS, USD-3, 3 of 9 Code),
Code93Ext - Full ASCII mode (also known as: USS-93, USD-3),
Code11 (also known as USD-8),
Codabar (also known as: Ames Code, USD-4, NW-7/2 of 7 Code),
Postnet,
Planet,
MSI (also known as Modified Plessey),
Numly (also known as: ESN, Electronic Serial Number barcode),
SSCC-18 (also known as: Serial Shipping Containter Code),
ITF-14 (also known as: Shipping Container Code),
EAN-14 (also known as: Shipping Container Code),
USPS Sack Label (also known as: USPS 25 Sack label),
USPS Tray Label (also known as: USPS 25 Tray label),
Swiss Post Parcel (also known as: SwissPost Parcel Barcode, Switzerland Post Parcel Barcode),
Pharma Zentral Nummer (PZN),
Optical Product Code (also known as: OPC, Vision Council of America OPC, VCA BarCode, VCA OPC),
Deutsche Post Leitcode,
Deutsche Post Identcode,
Royal Mail 4-State,
Singapore Post 4-State,
Royal TNT Post Kix.