//Get the connection string from App.config file
 public DBUtils()
 {
     try
     {
         AppConfigReader appConfig = new AppConfigReader();
         connectionString = appConfig.GetDBConnectionString();
         Console.WriteLine("connection string=" + connectionString);
     }
     catch (Exception e)
     {
         Console.WriteLine("There was a problem while fetching connection string" + e);
     }
 }