public ChargesController() { // New 2019-08-20 _connectionString = @"Data Source=DELL-5490\SQLEXPRESS;Initial Catalog=Fitness;Integrated Security=True"; //_connectionString = ConnectionStringManager.GetConnectionString("Fitness"); if (String.IsNullOrEmpty(_connectionString)) { ConnectionStringManager.AddConnectionString("Fitness", @"Data Source=DELL-5490\SQLEXPRESS;Initial Catalog=Fitness;Integrated Security=True"); _connectionString = ConnectionStringManager.GetConnectionString("Fitness"); } IKernel ninjectKernel = new StandardKernel(); ninjectKernel.Bind <IChargeServise>().To <ChargeServise>().WithConstructorArgument("stringConnection", _connectionString); _chargeServise = ninjectKernel.Get <IChargeServise>(); // Old 2019-08-19 //_chargeServise = new ChargeServise(Properties.Settings.Default.DataBase); }