CODEWITHSUNDEEP
c#ioc-container
advapi
advapi

Reputation: 3907

Best practice for having a class served via Ioc and Default instance

in a WPF I've got a class called UserMessageService that I use to dispatch usermessages. I've created implemented it as a singleton but I want to expose it via IoC as well

public class UserMessageService : IUserMessageService
{
    private static UserMessageService userMessageService;
    private static readonly object objLock = new object();
    private readonly IMessageMediator messageMediator;

    private UserMessageService()
    {
        messageMediator = ServiceLocator.Default.ResolveType<IMessageMediator>();
    }

    public static UserMessageService Default
    {
       get
       {
           lock (objLock)
           {
               return userMessageService ?? (userMessageService = new UserMessageService());
           }
           
       }
    }

    public void SendMessage(string message,LogMessageTypeEnum type =LogMessageTypeEnum.Info)
    {
        var userMessage = new UserMessage
        {
             Message = message,
             LogMessageType = type
        };

        messageMediator.SendMessageAsync(userMessage);
    }
}

What's the best practice to do so?

UPDATE #1

I've added this during my registration's code (for other Catel's users)

   serviceLocator.RegisterType<IUserMessageService>((x) => UserMessageService.Default);

Upvotes: 0

Views: 92

Answers (1)

Domysee
Domysee

Reputation: 12846

Create a factory method and configure the IoC container to use this factory method for the type UserMessageService

Example

IoCContainer.For<UserMessageService>().Use(() => return UserMessageService.Default);

Upvotes: 1

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