The old version of the user's data file cannot be overwritten, thinking should be set the a property of a single file, but this a few have tried a lot, will cover installation,

So ask, how on the premise of the entire application is cover installation (and uninstall the old version, you can specify the file not unloaded when unloading, but will be overwritten when installation), specify a file if it already exists, does not cover, installation does not exist?

CodePudding user response:

1. The standard packaging tools allow you to write their own script
2. You don't curious, your system tray in the long term the appdata folder exactly why so big? Why so big? Because is this requirement because of you, so we have a lot of circumstances is write data in a and program installation directory system that is independent of the path to avoid upgrade cover
3. In the same way, when the new version, you run your application, you can have own judgement appdata, should be how to deal with,