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how to inject logger instance to every class that has a property of type ILogger using MEF


how to inject logger instance to every class that has a property of type ILogger using MEF

By : user3853786
Date : October 28 2020, 04:55 PM
it fixes the issue Well, typically, in MEF, you allow MEF to do your object construction, which will allow it to automatically compose the objects correctly, and set the ILogger properties with [Import] tags automatically.
That being said, this doesn't always work in every scenario. If you cannot have MEF construct your objects because they're being generated from a separate source, there are other options.
code :


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how to inject a logger instance using MEF?

how to inject a logger instance using MEF?


By : loonix
Date : March 29 2020, 07:55 AM
will help you Is it possible to inject an instance of logger class object using Managed Extensibility Framework? Please show a sample code snippet. , Yes, using Constructor Injection:
code :
private readonly ILogger logger;

[ImportingConstructor]
public MyClass(ILogger logger)
{
    this.logger = logger;
}
[Import(typeof(ILogger))]
public ILogger Logger { get; set; }
Castle Windsor won't inject Logger in a property!

Castle Windsor won't inject Logger in a property!


By : user3026619
Date : March 29 2020, 07:55 AM
hop of those help? I try to inject log4net in a ILogger property of my service class but the property is always NULL! , A problem is where you are checking it:
code :
 public ILogger Logger
    {
        get { return logger; }
        set { logger = value; }
    }

    public LogicClass1()
    {
        logger.Debug("Here logger is NullLogger!");
    }
Backing field of type ILogger but the injected param of type ILogger<T>

Backing field of type ILogger but the injected param of type ILogger<T>


By : user2486843
Date : March 29 2020, 07:55 AM
may help you . ILogger implements ILogger. That's why you can assign ILogger to ILogger The XML comment for ILogger is:
C# .NET Core property of type ILogger

C# .NET Core property of type ILogger


By : Derrick Lee
Date : March 29 2020, 07:55 AM
hope this fix your issue This isn't specific to .NET Core, but to the C# language itself. I suggest you read the Microsoft article on interfaces for a more thorough understanding of how they work.
But to answer your question, when the type of an object is an interface, all you know about the object is that you can use all the methods of that interface. For example, the ILogger interface requires that a Log method is implemented. So you can be sure that you can call Log() on that object.
code :
((ConsoleLogger) Logger).DisableColors = true;
Inject instance of ILogger in my component class Azure Functions using Autofac

Inject instance of ILogger in my component class Azure Functions using Autofac


By : Razdolbyte
Date : March 29 2020, 07:55 AM
I hope this helps you . In Azure Functions V2, the ILogger is injected by default. Also, here are two very nice articles on dependency inject in Azure Functions. https://blog.mexia.com.au/dependency-injections-on-azure-functions-v2
and http://codingsoul.de/2018/01/19/azure-function-dependency-injection-with-autofac/
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