Object reference not set to an instance of an object. - App.config

Question

I receiving the error and in the local window I am seeing for both conSettings and connectionString value of null. I am right to say ConfigurationManager is null and I need

Answer 1

you need to read AppSettings key as below ,

string connectionString = 
      ConfigurationSettings.AppSettings["MyDBConnectionString"];

still you receive empty value, try below steps

1. Select the App.Config file in the solution explorer
2. In the property window select Copy to Output Directory to Copy Always.
3. Now Build the application and try again.

to access like below you need to add connectionStrings section in app config

  string connectionString = 
      ConfigurationManager.ConnectionStrings["MyDBConnectionString"].ConnectionString; // error points here

sample app config