使用 COM 互操作解决反射中的 .NET 程序集不匹配问题

Question

我正在尝试在 .Net 2.0 可执行文件中使用 .Net 4.6 库。

我使用了 this COM approach，它一直有效，直到程序集 System.Collections.Immutable 被解决。

我收到带有消息 "Could not load file or assembly 'System.Collections.Immutable, Version=1.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"

的 ReflectionTypeLoadException

.Net 4.6 库使用 Roslyn 和 Roslyn 程序集引用 System.Collections.Immutable，版本 =1.2.1.0。并且项目中引用了这个版本的程序集。但是 Roslyn 程序集（Microsoft.CodeAnalysis.CSharp、版本 2.6.0.0）引用 System.Reflection.Metadata、版本=1.4.1.0 和元数据程序集引用 System.Collections.Immutable、版本=1.2.0.0

当我在 .Net 4.6 可执行文件而不是 .Net 2.0 中使用 .Net 4.6 库时，一切正常，无一例外。

我尝试将不可变程序集的 "Specific Version" 设置为 false，但没有用。还尝试将 .Net 2.0 和 .Net 4.6 文件夹分开，但都不起作用。 .Net 4.6 库 dll 和 Immutable dll 也在同一个文件夹中。

app.config .Net 2.0 可执行文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <probing privatePath="Adapter" />
    </assemblyBinding>
  </runtime>
</configuration>

app.config .Net 4.6 库

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.2.1.0" newVersion="1.2.1.0" />
      </dependentAssembly>
      ......other dependent assemblies....
    </assemblyBinding>
  </runtime>
</configuration>

.Net 2.0 可执行代码

static void Main()
{
    Console.WriteLine("CLR version from EXE: {0}", Environment.Version);
    Console.WriteLine("Is64BitProcess: {0}", (IntPtr.Size == 8));

    Type myClassAdapterType = Type.GetTypeFromProgID("Net4ToNet2Adapter.MyClassAdapter");
    object myClassAdapterInstance = Activator.CreateInstance(myClassAdapterType);
    IEnchanterAdapter myClassAdapter = (IEnchanterAdapter)myClassAdapterInstance;
    myClassAdapter.DoNet4Action();
}

.Net 4.6 库代码

[ComVisible(true)]
[Guid("E36BBF07-591E-4959-97AE-D439CBA392FB")]
public interface IMyClassAdapter
{
    void DoNet4Action();
}

[ComVisible(true)]
[Guid("A6574755-925A-4E41-A01B-B6A0EEF72DF0")]
public class MyClassAdapter : IMyClassAdapter
{
    private MyClass _myClass = new MyClass();

    public MyClassAdapter()
    {
        Console.WriteLine("adapter constructor");
    }

    public void DoNet4Action()
    {
        Console.WriteLine("CLR version from EXE: {0}", Environment.Version);
        Console.WriteLine("Is64BitProcess: {0}", Environment.Is64BitProcess);

        _myClass.DoNet4Action();
    }
}

class MyClass
{
    public void DoNet4Action()
    {
        var workspace = new AdhocWorkspace(); // throws exception here
    }
}

输出

CLR version from EXE: 2.0.50727.8794
Is64BitProcess: True
adapter constructor
CLR version from EXE: 4.0.30319.42000
Is64BitProcess: True

Fusion Assembly 绑定日志（项目引用版本 1.2.2.0 时的）（这再次适用于 .Net 4.6 可执行文件）

        FusionLog   "=== Pre-bind state information ===
LOG: DisplayName = System.Collections.Immutable, Version=1.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a\n (Fully-specified)
LOG: Appbase = file:///D:/Develop/Enchanter/UnityWorkspace/bin/Debug/
LOG: Initial PrivatePath = NULL
Calling assembly : Microsoft.CodeAnalysis, Version=2.6.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: D:\Develop\Enchanter\UnityWorkspace\bin\Debug\UnityWorkspace.exe.Config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: System.Collections.Immutable, Version=1.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
LOG: Attempting download of new URL file:///D:/Develop/Enchanter/UnityWorkspace/bin/Debug/System.Collections.Immutable.DLL.
LOG: Attempting download of new URL file:///D:/Develop/Enchanter/UnityWorkspace/bin/Debug/System.Collections.Immutable/System.Collections.Immutable.DLL.
LOG: Attempting download of new URL file:///D:/Develop/Enchanter/UnityWorkspace/bin/Debug/Adapter/System.Collections.Immutable.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Build Number
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.
"   string

Answer 1

程序集绑定重定向应该添加到 .Net 2.0 可执行文件手动因为Visual Studio不会自动这样做由于 COM 互操作，它们没有关系。

.Net 2.0 可执行文件的新 app.config 是：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <probing privatePath="Adapter" />
      <dependentAssembly>
        <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.2.2.0" newVersion="1.2.2.0" />
      </dependentAssembly>
       ......other dependent assemblies....
    </assemblyBinding>
  </runtime>
</configuration>

使用 COM 互操作解决反射中的 .NET 程序集不匹配问题

Resolving .NET assembly mismatches in reflection with COM interop

.net

com

interop

system.reflection