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Editorial Team
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Asked: 2026-05-24T07:32:18+00:00

I have a generic object: MyGenericObject(of T), how do I register a custom renderer

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I have a generic object: MyGenericObject(of T), how do I register a custom renderer in log4net in the config file? For example, if this was a normal object the following would work:

<renderer renderingClass="MyObjectRenderer, MyClassLibrary" renderedClass="MyObject, MyClassLibrary" />

However I don’t know how to write this for Generics, I attempted this:

<renderer renderingClass="MyObjectRenderer, MyClassLibrary" renderedClass="MyObject(Of MyNonGenericObject), MyClassLibrary" />

but this happened:

log4net:ERROR XmlHierarchyConfigurator: Could not find class [MyObject(Of MyNonGenericObject), MyClassLibrary].
System.TypeLoadException: Could not load type 'MyObject(Of MyNonGenericObject)' from assembly 'MyClassLibrary'.

Does anyone have any better ideas on how to achive what I want?

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1 Answer

  1. Editorial Team

    The syntax you are using in XML file, MyObject(Of MyNonGenericObject), is specific to VB .NET, just like MyObject<MyNonGenericObject> is specific to C#.

    You change your declaration to use language-independent CLR type syntax:

    MyObject`1[[MyNonGenericObject, MyClassLibrary]], MyClassLibrary

    (1 after ` indicates the number of type parameters.)

    So the line will be:

    <renderer renderingClass="MyObjectRenderer, MyClassLibrary" renderedClass="MyObject`1[[MyNonGenericObject, MyClassLibrary]], MyClassLibrary" />
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