%APPDATA% in connection string is not substituted for the actual folder?

Question

When using WPF and entity-framework I have an APP.CONFIG that looks like the following:

Answer 1

You have to replace the %APPDATA% in the code with the relative path -

var connectionString = ConfigurationManager.ConnectionStrings["DatabaseEntities"]
                                                           .ConnectionString;    
connectionString.Replace("%APPDATA%", 
  Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);