Recognize if google chrome extension is installed

Question

Is there a way to determine if a specific extension is installed in Chrome with C# code?

I have only found JS options here in Stack Overflow.

I have tried to look for relevant files under %AppData% but there weren't.

Note: The requirment is to develop it with .Net 3.5.

Answer 1

Solved it. The problem was that the extension was loaded in developer mode from an unpacked folder. Therefore it wasn't copied to the %USERPROFILE%\\AppData\\Local\\Google\\Chrome\\User Data\\Default\\Extensions\\ directory.

So to look for an extension you have to first look in the mentioned path for manifest.json file and after that:

Load: %USERPROFILE%\AppData\Local\Google\Chrome\User Data\Default\preferences (it's a file)
Deserialize the json content.
iterate objects with "path" property.
Go to each path and open the manifest.json file

Hope it will help somebody.