I am building an installer that has an additional dialogue page prompting the user to enter a folder location. This works fine.
What I would like to do is to check that the folder the user has chosen contains a certain database file (say xyz.mdb) and show an error message if it is missing.
(I've managed to get it to show an error once the install begins which then quits out - this is a little too harsh as it means they have to start the install all over again and re-enter licence details etc)
Ideally - If it is missing I would like an error message to appear at the UI stage stopping the user from proceeding with the install process and let them go back and change the folder path to be the correct one.
Hope someone can help me out.
Thanks.