Custom Action - Error 1001: Could not find file myApp.InstallState

Question

I have tried to create a custom action for a Visual Studio Installer project to modify the permissions for a config file.

The Installer.cs is as follows:

Answer 1

For me, the issue was as simple as just adding a closing quote around one of the textbox names in my CustomActionData string.

I was using the "Textboxes (A)" and "Textboxes (B)" windows in the User Interface section. A has 1 box, EDITA1, where I get the path to a file, and B has 2 boxes, EDITB1 and EDITB2, for some database parameters. My CustomActionData string looked like this:

/filepath="[EDITA1]" /host="[EDITB1] /port="[EDITB2]" 

It should have been:

/filepath="[EDITA1]" /host="[EDITB1]" /port="[EDITB2]" 

(closing quote on [EDITB1])

I used the Install override in my Installer class to get the values (i.e. string filepath = Context.Parameters["filepath"];) and used it to write them to an INI file for my app to use once installed. I put the "Primary output" under all of the phases in the Custom Actions GUI, but did nothing with the InstallerClass property (default: True) and only set the CustomActionData string on the Install one. I didn't even include override functions in my Installer class, since I was doing nothing that was custom in the other phases.