vpeControl.Barcode Preview takes 30 seconds

[ds-hanau]

Hi Vpe Team

We are using the latest .Net Wrapper with native Vpe Version 7.1.0.8204 (on Windows 7 if it matters).
It takes several seconds to print the document (no change with or without preview).

This sample codes demonstrates the performance lack:

Code: Select all

vpeControl.OpenDoc();
vpeControl.Barcode(5, 5, 20, 20, BarcodeType.Code128, "1a1a0aUNDEFa32641a1aAUPa0aEXS", "");
vpeControl.ScaleMode = ScaleMode.FullPage;
vpeControl.PreviewDoc(-1, -1, -1, -1, PreviewState.Maximized);

If we change the Barcodetext to e.g. "123456789" it prints the document at once

What is the issue in this case?
Thanks for your support

[IDEAL Software Support]

The problem is that the manufacturer of the barcode library, which we licensed, tries to optimize the Code-128 barcode regarding its code length, by switching automatically between the charsets A, B and C. With the latest version, the library is trying all possible permutations, which can cause very long delays (30 seconds and more) to finish computations for a single Code-128 barcode, if it has a significant number of characters. Because the manufacturer did not fix the problem until today, and we have the source code, we have completely rewritten the optimization code last week ourselves, to avoid such problems completely.

We will release the fix with the next official service release of VPE, approx. in June. You - and anyone else experiencing such problems - can contact us by e-mail to receive a pre-release right now. Please provide your license key when contacting us.