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

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.

Standards supported:
Code39,
Code39Ext (Full ASCII mode),
Code128,
Upc/Ean 128,
Ean13,
Ean8,
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),
Posnet,
Planet,
MSI (also known as Modified Plessey)