引用相同程序集的不同版本的第三方组件 [英] Third party components referencing different versions of the same assembly

问题描述

在我的项目中，我使用两个不同的第三方组件。
我无法访问这些组件的源代码。

每个组件都引用了不同版本的同一个DLL程序集log4net。 >

特别是组件A引用了log4net版本1.2.9.0，而组件B引用了log4net版本1.2.10.0。

在VS2012中，我目前正在添加两个第三方组件DLL的引用，我应该添加一个log4net参考。

我试过以下：

1）添加对log4net 1.2.9.0的引用：代码编译，但在运行时我收到异常无法加载文件或程序集[...] log4net ，版本= 1.2.10.0 [...]

2）添加对log4net 1.2.10.0的引用：代码编译，但在运行时我收到异常无法加载文件或程序集[...] log4net，Version = 1.2.10.0 [...]

3）将log4net.dll版本1.2.9.0重命名为log4netOld。 dll并添加版本1.2.9.0和1.2.10.0的项目引用：在编译期间，我得到一个预期的警告，告诉它有命名空间冲突，并且编译器使用1.2.10.0解析类型，所以在运行时我得到与点2 - >代码相同的问题编译，但在运行时我得到异常无法加载文件或程序集[...] log4net，版本= 1.2.10.0 [...]

我是不是所有参考属性的专家，我们当前的所有参考设置是：

1）别名：全局

2）copy local：true

3）嵌入互操作类型：false

我解决问题？

解决方案

您应该在解决方案中引用1.2.10，并在app.config中添加绑定重定向点1.2.9到1.2.10 - 像这样：

 < runtime> 
< assemblyBinding xmlns =urn：schemas-microsoft-com：asm.v1> 
< dependentAssembly> 
< assemblyIdentity name =log4netpublicKeyToken =1b44e1d426115821culture =neutral/> 
< bindingRedirect oldVersion =0.0.0.0-1.2.10.0newVersion =1.2.10.0/> 
< / dependentAssembly> 
< / assemblyBinding> 
< / runtime> 
  

In my project I'm using two different third party components. I don't have access to the source code of these components.

Each component is referencing a different version of the same DLL assembly log4net.

In particular component A is referencing log4net version 1.2.9.0, while component B is referencing log4net version 1.2.10.0.

In VS2012, I'm currently adding to the references of my project the two third party components DLLs and I should add as well a reference to log4net.

I've tried the following:

1) Adding a reference to log4net 1.2.9.0: code compiles but at runtime I get exception "Could not load file or assembly [...] log4net, Version= 1.2.10.0 [...]"

2) Adding a reference to log4net 1.2.10.0: code compiles but at runtime I get exception "Could not load file or assembly [...] log4net, Version= 1.2.10.0 [...]"

3) Renaming the log4net.dll version 1.2.9.0 to log4netOld.dll and adding both the version 1.2.9.0 and the 1.2.10.0 to the project references: during compile time I get an expected warning telling that there is namespace clash, and the compiler resolves the types using 1.2.10.0, so at runtime I get the same problem as point 2 -> code compiles but at runtime I get exception "Could not load file or assembly [...] log4net, Version= 1.2.10.0 [...]"

I'm not expert at all of the Reference properties, our current setting for all references is:

1) alias: global

2) copy local: true

3) embed interop types: false

Any idea about how can I solve the problem ?

解决方案

You should reference 1.2.10 in your solution and add a binding redirect in the app.config to point 1.2.9 to 1.2.10 - something like this:

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="log4net" publicKeyToken="1b44e1d426115821" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.2.10.0" newVersion="1.2.10.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>

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