We had a contractor create a web based application (management decided web based vs windows) to run our STD process. The process makes use of thermal printers and scantron scanners. During developement, everything seemed to be running fine. The contractor and I both had VS on our machines and the printers and scanner worked flawlessly. Well, the contractor told the manager that she would not have time to test the scanning process that SHE WORKED ON ALONE. The manager said not to worry, we (ME) would test it.
As soon as the contractor left, I loaded production data into the system, which was eye opener #1. Everything worked fine with the 4 test cases, but with production data.....
The second issue, and the reason I write this is that the printer and scanner no longer worked once the application was deployed. I now know that periphals cannot be controled through a browser. I found a way to get past the printing. I wrote the info to a table and created a windows app to check the table and print the jobs. But for the scanner, I decided to deploy the application locally to the machine where the scanner would be attached. In theory, this should work. But, after deploying the website, it did not work. The
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