Configuration system failed to initialize

App.config code as follows

In Appconfig code as follows

 
   
Program.cs page code as follows                 
 string connectionString = ConfigurationManager.ConnectionStrings["OneTransportConnectionString"].ConnectionString;   
          SqlConnection sqlConnection = new SqlConnection(connectionString);              
 SqlCommand cmd = new SqlCommand();       
SqlDataReader reader;         
    cmd.CommandText = "Select * from Customers";   
          cmd.CommandType = CommandType.Text;      
       cmd.Connection = sqlConnection;         
    sqlConnection.Open();           
  reader = cmd.ExecuteReader();      
       Console.WriteLine("test");    
         sqlConnection.Close();
When i run the above code shows error as follows

Configuration system failed to initialize

The above error code in below line as follows

string connectionString = ConfigurationManager.ConnectionStrings["OneTransportConnectionString"].ConnectionString;

please help me what is the mistake in my above code

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

ketan borsdiya10y ago
Hi Narasiman,
You need to remove below code from app.config

if you need to required it then show me code snippet where to use it I will guid you how to add it.
Rajeesh Menoth10y ago
Hi,

Please check the following reference :

http://stackoverflow.com/questions/6436157/configuration-system-failed-to-initialize

http://stackoverflow.com/questions/21683473/app-config-errors-with-configuration-system-failed-to-initialize