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POMAF with class inside DLL passing to host
 

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    <p>I'm developing a MAF application which, in a DLL contains a class. The problem is, when one of the methods exposed by one of the AddIns uses this class. Example:</p> <pre><code>class A { Property_1 Property_2 Method_X() } </code></pre> <p>And my AddIn has a method which use class A</p> <pre><code>MyAddIn.Set(class A); </code></pre> <p>So, with this, where must I place the DLL in the pipeline? Or how should I proceed with this scenario?</p> <p>When the proyect start, the warnings of the AddInStore.Update() method throws messages like: unable to connect a part of a canalization...</p> <p>So, there is an article <a href="http://www.developerfusion.com/article/9396/creating-extensible-applications-with-maf/" rel="nofollow">this</a> which says "There are many other capabilities MAF provides such as versioning, passing collections and WPF visuals, passing non-serializable types, etc.". But I can't find an example.</p> <p>EDIT:</p> <p>Thanks to Panos for this <a href="http://blogs.msdn.com/b/clraddins/archive/2007/02/27/restrictions-on-contracts.aspx" rel="nofollow">link</a> about the restrictions on contracts. And after more research I've found this <a href="http://blogs.msdn.com/b/zifengh/archive/2007/01/24/clr-addin-model-in-paint-net-10-data-type-contract.aspx" rel="nofollow">article</a> which, through the Paint.NET proyect, shows how to use data types in the host without referencing.</p> <p>After reading both sources, I know that this is what I'm looking for. But I can't understand it yet. </p> <p>As a final petition, can someone please provide me code example? Just to finally get it.</p> <p>Thanks.</p>
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    1. COBefore you continue with System.Addin, I would advise you to have a look at other add-in engines, like MEF for example. MEF is quite popular and has a low learning curve. With System.AddIn you will need to invest a lot of time to get the hang of it. Note that System.AddIn has the add-in isolation feature (different AppDomain/Processes) which is quite hard to do by yourself and it is probably the only reason to choose it. If you are looking for versioning have a look at Autofac + MEF. Finally if you only need add-in capabilities, MEF should be more than enough. Regards.
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      1. USPanos Rontogiannis
    2. COHi, I already look at MEF, however, the main reason for using MAF is updating the plugins without shutting down the application, this is crucial. As far as I know, this is not possible with MEF. My app is already capable of updating the AddIn.
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