I'm developing a WPF application which depends on Entity Framework for data access.
At the first time installation I need to create a new connection string based on the User input, then updating App.Config according to that.

**The problem is: after updating the App.Config file, Entity Framework doesn't detect the change and uses the old startup-time ConnectionString for instantiating the DbContext.**

How can I update the Entity Framework's ConnectionString setting at runtime?