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.

Answer 1

For .Net Framework, try this

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile 

For .Net core or anything newer, see the other answers.