如何为通用对象配置Log4Net自定义对象呈现器？ [英] How to Configure Log4Net Custom Object Renderer for Generic Objects?

问题描述

我有一个通用对象：MyGenericObject（T），如何注册自定义渲染器在log4net的配置文件中？例如，如果这是一个普通的对象，那么下面的代码就可以工作了：

 < renderer renderingClass =MyObjectRenderer，MyClassLibraryrenderedClass = MyObject，MyClassLibrary/> 
  

但是我不知道如何为泛型编写这个代码，我试过这个：

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

但发生这种情况：

  log4net：ERROR XmlHierarchyConfigurator：找不到类[MyObject（Of MyNonGenericObject），MyClassLibrary]。 
 System.TypeLoadException：无法从程序集'MyClassLibrary'中加载'MyObject（Of MyNonGenericObject）'类型。 
  

有没有人有更好的想法来实现我想要的功能？

解决方案在XML文件中使用的语法< .NET，就像 MyObject< MyNonGenericObject> 是特定于C＃的。

您将声明更改为使用language-独立的CLR类型语法：

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

（ 1 ）

所以这一行将是：

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

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?

解决方案

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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