With Barcodesoft Crystal Reports UFL (User Function Library), you can print bar code from Crystal Reports.

All Barcodesoft font packages contain a UFL DLL (cruflBCS), and this DLL is automatically registered when installed.

Open Crystal Reports and create a new Formula Field, click "Use Editor" field.

In the Function Tree, expand Additional Functions list, then expand Visual Basic UFLs list. Look for the function you need and double click to select it, like "BCSCode39".
Now, type in the argument like this {TestData.Data}.

A formula field has been created successfully. You can drap and drop it to your report.

Barcodesoft crUFL supports the following bar code symbologies:
Code 39
Code39Ext
Code128A
Code128B
Code128C
UPCA
UPCE
EAN13
EAN8
Bookland
UCC/EAN Code 128
Interleaved 2 of 5
Code 93
Code 25
Code 11
Codabar
MSI
PDF417
DataMatrix
QRCode
Aztec
Code16K