To print Interleaved 25 barcode in Crystal Reports, what you need is Barcodesoft UFL (User Function Library) and Interleaved 2of5 barcode font.
1. Open DOS prompt.
If you are using Windows Vista or Windows 7, please Open DOS prompt as administrator.
Go to the following folder
CD C:\Program Files\Common Files\Barcodesoft\FontUtil
Type in the following DOS command to register crUFLbcs.dll
If registration fails, please use the following DOS command to register it.
Regtlibv12 is a utility of Windows .NET Framework 2.0.
2. Open your crystal report. Right click Formula Fields, choose "New..." from the context menu.
Type in "Interleaved 25" in the Name textbox, then click "Use Editor".
3. Double click "BCSLinearI25" 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. Drag and drop the formula field in your crystal report design view.
5. Right click formula field and choose "Format Field" from context menu. Then choose "I25mHr" as font typeface. You will see Interleaved 2of5 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\i25font 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
For more information about Interleaved 25 barcode, please click Interleaved 25 barcode.
To download crUFLBcs.dll, please click the following link