ConfigurationManager not found.

I know this is an old problem but every few months I get caught by it. The problem is that ConfigurationManager that is used to get settings from the app.config/web.config file is not available.

The solution is simple. Add reference to the dll: System.Configuration.

[codesyntax lang=”csharp”]

using System.Configuration;

string settings = ConfigurationManager.AppSettings["SomeSettings"];

[/codesyntax]