Application configuration file for C# class library

Hi all, I'm building a library of C# classes to drive my website, and I'd like to keep a string in an application configuration file. In my class I'm using the following code... private string dbString = System.Configuration.ConfigurationSettings.AppSettings["fooKey"]; ...which is supposed to grab its value from the "[appname].config" file in my C# class library, which contains the following: However, when I step through the code using a test harness I see that my string value remains null after the line of code above is run. Any idea why this might be failing? I notice my [appname].config file isn't being copied to \bin\debug when I run the project, and I tried copying it there myself, but to no avail. I've also noticed that all the instructions I can find for working with app config files are for .exe projects or asp.net apps, not for class libraries -- I wonder if there's something one needs to do differently here? Thanks!

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ytram521y ago
Whenever you write a class library, and it has an app config file, then the applications that actually use the DLL need to have that app config file. I've run into that problem at my job as I use a company library that requires any program that uses it to have that app config file. It's actually fairly annoying. My recommendation would be to store the values in a static class with static properties instead of a config file, if at all possible, to avoid this issue.