Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); AppSettingsSection appSettings = new AppSettingsSection(); config.Sections.Add("appSettings", appSettings); config.Save(ConfigurationSaveMode.Modified);
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); ConnectionStringSettings connection = new ConnectionStringSettings(); connection.Name = "MyConnectionString"; connection.ConnectionString = "Server=myServerAddress;Database=myDatabase;Trusted_Connection=True;"; config.ConnectionStrings.ConnectionStrings.Add(connection); config.Save(ConfigurationSaveMode.Modified);Package library: System.Configuration