Mef, passing parameters to a module

Question

I'm studying MEF and I'm not able to resolve a problem.

I have a main application, called MainMEF, and a simple module, called SimpleModule. This one consists of a single UserControl which is loaded dynamically.

When MainMEF starts up, I would be able to pass to the module a reference to main application contained into MainMEF.

How could I fix this?

score 6 · Accepted Answer · edited May 23 '17 at 10:32

6

Lots of questions regarding this already. You could pass it after initialisation using a property: How do I populate a MEF plugin with data that is not hard coded into the assembly?

Or use MEF constructor parameters: MEF Constructor Parameters with Multiple Constructors

The export looks something like this:

[Export(typeof(ITest))]
class Test : ITest 
{
    void Test() 
    {  }

    [ImportingConstructor] //<- This is the key bit here
    void Test(object parameter) 
    {  }
}

Then when composing your catalog do this:

catalog.ComposeExportedValue( /* parameter here */);
catalog.ComposeParts(this);

edited May 23 '17 at 10:32

Community

1
1

answered Jun 03 '10 at 13:41

Tim

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Thank you for your reply. Very helpful. Could you explain me these lines with more code? Take into account catalog. ### catalog.ComposeExportedValue( /* parameter here */); catalog.ComposeParts(this); ### What kind of type does it belong to? – Lorenzo B Jun 04 '10 at 08:10

Mef, passing parameters to a module

1 Answers1