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c#mef

how to inject a logger instance using MEF?

Is it possible to inject an instance of logger class object using Managed Extensibility Framework? Please show a sample code snippet.

Solution

  • Yes, using Constructor Injection:

    private readonly ILogger logger;

[ImportingConstructor]
public MyClass(ILogger logger)
{
    this.logger = logger;
}

    Obviously (if you know MEF) some other type must Export ILogger...

    Alternatively, you can also use Property Injection, although I find the semantics vague:

    [Import(typeof(ILogger))]
public ILogger Logger { get; set; }