To print POSTNET barcode in Crystal Reports, you can use Barcodesoft UFL (User Function Library) and POSTNet barcode font.

1. Open DOS prompt. Go to the following folder
C:\Program Files\Common Files\Barcodesoft\FontUtil
Type in the following DOS command to register crUFLbcs.dll
regsvr32 crUFLbcs.dll




2. Open your crystal report. Right click Formula Fields, choose "New..." from the context menu.

Type in "POSTNET" in the Name textbox, then click "Use Editor".





3. Double click "BCSLinearPostnet" function from Visual Basic UFLs list as shown.




Then type in the database field as parameter.



Now click "Save" button to save the formula field.

4. Drap and drop the formula field in your crystal report. You will see POSTNET barcode.

If you use Crystal Reports 9 or above, you can add Barcodesoft formulas to Crystal Repository.

Open Barcodesoft.rpt from C:\Program Files\Barcodesoft\Postnetfont folder.

Click menu Report ==> Formula Workshop.

Right click the formulas you need, choose "Add to Repository" from the context menu as shown.




Now, Create a new Formula field as shown below