How to read data from a configuration file, in Visual Studio plugin

Hi,

I am implementing Statement Completion (https://msdn.microsoft.com/en-us/library/ee372314.aspx ) functionality for a custom language.

In void ICompletionSource.AugmentCompletionSession() I need to read some configuration values from some config file. I tried with a normal app.config but it doesn't seem to work.

Could you please advice me on how to get it done?

Thanks,

Sandun