Pfthb

Apologies in advance… I’m new to DI/IoC, Prism and it’s been a long 12 hour day!

The project I’m working on must support communications for TcpIp, Bluetooth LE, and (Serial if available). Each connection type will implement IConnection (see below), and a type specific interface (i.e. IBluetoothConnection, ITcpIpConnection, and ISerialConnection) to encapsulate the respective connection parameters. (Baud Rate, Parity, Flow Control, IP Address, Port #, etc…)

public interface IConnection

 bool Connected get; 
 bool Connect();
 bool Disconnect();
 bool Tx(string message);
 string Rx();


public interface IBluetoothLeConnection : IConnection

 int BaudRate get; set; 
 int Parity get; set; 
 int FlowControl get; set; 


public interface ITcpIpConnection : IConnection

 string IP get; set; 
 int Port get; set; 


public interface ISerialConnection : IConnection

 string CommPort get; set; 
 int BaudRate get; set; 
 int Parity get; set; 
 int FlowControl get; set; 

I plan to register all three as singletons.

containerRegistry.RegisterSingleton<IBluetoothConnection, BluetoothLeConnection>();
containerRegistry.RegisterSingleton<ITcpIpConnection, TcpIpConnection>();
containerRegistry.RegisterSingleton<ISeialConnection, SerialConnection>();

Define IConnection Connection in ViewMainBase, and then point it to the chosen concrete connection at runtime.

Questions

Will this work?

Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?

Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?

Will this work?

Yes.

Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?

I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.

Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?

Yes.