Check if foxit reader is installed?

Question

Using C# I want to detect whether foxit reader is installed on a windows machine. How can I achieve this?

Thanks in advance for your help.

Answer 1

Answer is here. You should look through registry and find the name "foxit reader"

Answer 2

I would do the following:

• Take a blank machine.
• Install FoxIt Reader.
• Look where it has been installed.
• Use the File.Exists function together with Environment.GetSpecialFolder to check for the executable to be present.

Alternatively, if the path may vary where it has been installed, you could:

• Take a blank machine.
• Install FoxIt Reader.
• Look for Registry keys that have been added.
• Use the RegistryKey functions to check for existance of related keys.

Answer 3

Files could be installed incorrectly. The same applies for registry keys that are stored by the Application itself. A File.Exists does not actually indicate it has been installed (and registered as a viewer).

I would personally check the Windows Installer database for the Product. checking the uninstall registry is a possible approach, however you can also invoke MsiQueryProductState using windows API calls.