ConfigurationManager Class

Question

Hi there I have a solution with two projects each project has an app.config file. Project 1 contains no settings yet when Project 1 launches the ConfigurationManager class it gets the config settings from the app.config file in Project 2. How does it do that? Thanks

Felipe Ramos · Answer

paul it work like I mention the ConfigurationManager.AppSettings will hold the NameValueCollection for the current application which in your case is Project 2. If you want to trace the code you can open the class with .NET Reflector and see what it is doing internally. Below is a fragment from the internal initializer internal ClientConfigurationSystem () { this . _configSystem = new ConfigSystem (); this . _configSystem . Init ( typeof ( ClientConfigurationHost ) new object [ 2 ]); this . _configHost = ( ClientConfigurationHost ) this . _configSystem . Host ; this . _configRoot = this . _configSystem . Root ; this . _configRoot . ConfigRemoved += new InternalConfigEventHandler ( this . OnConfigRemoved ); this . _isAppConfigHttp = this . _configHost . IsAppConfigHttp ; string schemeDelimiter = Uri . SchemeDelimiter ; }

Jiteendra Sampathirao · Answer

Hi As suthish said storing values in XML file... retrieve those values using code behind logic is the better approach....

paul walker · Answer

Hi Project 1 is the procesing module which contains the 'empty' App.Config file and the call to read parameters from the App.Config file (in Project 2) is of Output Type 'Class Library'. Project 2 which contains the App.Config file with the actual parameters is a testing harness used to unit test Project 1. This is awindows application. Note that:= The startup project is Project2 (as you would expect it is the testing harness) In the Solution properties Project2 is dependent on Project 1 so the build order must be Project1 then Project 2. Thanks Paul

Felipe Ramos · Answer

It would be interesting to know the project types of both of your projects and the build order. The ConfigurationManager will read the appconfig or webconfig from the executing project.

Suthish Nair · Answer

Normally i use an .xml file to store these settings and later reading it from code behind instead of messing up with multiple app.config files.