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.

I did not try any approach as of yet @Freeman, I'm looking to put my best foot forward. Any suggestions as to where I should start? — Hamza Ahmed, Sep 20 '12 at 12:41

score 1 · Accepted Answer · edited May 23 '17 at 10:28

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

edited May 23 '17 at 10:28

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answered Sep 20 '12 at 11:56

Dmitrii Dovgopolyi

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Strangely enough @Dmitry I opened up regedit on my machine and manually iterated through the list but could not find an entry for foxit reader although I have foxit reader 64 bit installed on my machine. So is this method foolproof? – Hamza Ahmed Sep 20 '12 at 12:36
Did you look in "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" in both current user and local machine? And in @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall"? – Dmitrii Dovgopolyi Sep 20 '12 at 12:59
I finally found it in this location @"HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Foxit Reader_is1" @Dmitry. I'm wondering whether this is an arbitrary location or a 64 bit installation of foxit always installs it's registry keys here? Now what about 32 bit machines? Or should I iterate through all the locations that you've indicated and check for the DisplayName/Install Location? – Hamza Ahmed Sep 20 '12 at 13:18
I think 32 bit machines don't have Wow6432Node node at all and you should iterate through all the locations to check the installation – Dmitrii Dovgopolyi Sep 20 '12 at 13:24
Wow6432Node is where all 32bit applications in 64bit systems write their data – Dmitrii Dovgopolyi Sep 20 '12 at 13:28
On a related note @Dmitry how can I detect in C# if a windows machine is 32 bit or 64 bit? – Hamza Ahmed Sep 20 '12 at 13:38
http://stackoverflow.com/questions/336633/how-to-detect-windows-64-bit-platform-with-net – Dmitrii Dovgopolyi Sep 20 '12 at 13:57

score 0 · Answer 2 · answered Sep 20 '12 at 11:56

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.

score 0 · Answer 3 · edited May 23 '17 at 12:10

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.

Check if foxit reader is installed?

3 Answers3