CODEWITHSUNDEEP
c#connection-stringapp-config
Error
Error

Reputation: 825

Configuration manager does not find connection string from app.config file

I added System.Configuration.dll as a reference. When I try to get a connection string by name, I get a null reference exception. So I tried to see if it has any using the following code:

for (int i = 0; i < ConfigurationManager.ConnectionStrings.Count; i++)
{
    string ad = ConfigurationManager.ConnectionStrings[0].ConnectionString;
}

I found out it has 3 connection strings! I am not sure from where, because I have only one in my config file, and none of these three are the one I added.

Next, I checked my appDomain:

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;

I've read that file inside my application; it is exactly the same as my AppConfig file, and contains my connection string.

Why doesn't configuration manager find it, and what can I do to fix it?

Upvotes: 3

Views: 4019

Answers (1)

rodrigogq
rodrigogq

Reputation: 1953

Make sure you are using the correct config file for your build.

Ie: If you are debubbing, Visual Studio can have an app/web.config for your debug and another for release. So make sure you are looking at the correct one.

Upvotes: 1

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