How to Configure Log4Net Custom Object Renderer for Generic Objects?

问题

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?

回答1:

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" />

来源：https://stackoverflow.com/questions/6844163/how-to-configure-log4net-custom-object-renderer-for-generic-objects