How to find path of active app config file

Question

I m trying to finish this exception handler   if  ConfigurationManager ConnectionStrings  ConnectionString    null        string pathOfActiveConfigFile            throw new ConfigurationErrorsException          You either forgot to set the connection string  or             you re using a unit test framework that looks for             the config file in strange places  update this file               pathOfActiveConfigFile       This problem seems to only happen to me when I m using nUnit

User · Answer

I tried one of the previous answers in a web app (actually an Azure web role running locally) and it didn't quite work. However, this similar approach did work:

var map = new ExeConfigurationFileMap { ExeConfigFilename = "MyComponent.dll.config" };
var path = ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None).FilePath;

The config file turned out to be in C:\Program Files\IIS Express\MyComponent.dll.config. Interesting place for it.

User · Answer

If you mean you are only getting a null return when you use NUnit  then you probably need to copy the ConnectionString value the your app config of your application to the app config of your test library    When it is run by the test loader  the test assembly is loaded at runtime and will look in its own app config  renamed to testAssembly dll config at compile time  rather then your applications config file   To get the location of the assembly you re running  try  System Reflection Assembly GetExecutingAssembly   Location

User · Answer

Try this AppDomain CurrentDomain SetupInformation ConfigurationFile

User · Answer

Strictly speaking  there is no single configuration file  Excluding ASP NET1 there can be three configuration files using the inbuilt  System Configuration  support  In addition to the machine config  app exe config  user roaming  and user local   To get the  global  configuration  exe config    ConfigurationManager OpenExeConfiguration ConfigurationUserLevel None                       FilePath   Use different ConfigurationUserLevel values for per-use roaming and non-roaming configuration files     1 Which has a completely different model where the content of a child folders  IIS-virtual or file system  web config can  depending on the setting  add to or override the parent s web config

User · Answer

Depending on the location of your config file System Reflection Assembly GetExecutingAssembly   Location might do what you need

User · Answer

The first time I realized that the Unit testing project referenced the app config in that project rather then the app config associated with my production code project  off course  DOH  I just added a line in the Post Build Event of the Prod project that will copy the app config to the bin folder of the test project   Problem solved  I haven t noticed any weird side effects so far  but I am not sure that this is the right solution  but at least it seems to work

User · Answer

One more option that I saw is missing here   const string APP CONFIG FILE    APP CONFIG FILE   string defaultSysConfigFilePath    string AppDomain CurrentDomain GetData APP CONFIG FILE

User · Answer

Make sure you click the properties on the file and set it to  copy always  or it will not be in the Debug  folder with your happy lil dll s to configure where it needs to be and add more cowbell

[c#] How to find path of active app.config file?

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