【发布时间】：2023-03-19 16:58:02
【问题描述】：
我有两个程序集：
- 父程序集是针对 .NET Framework 编译的。
- 子程序集是针对 .NET Core 编译的。
我想调用子程序集中的一个方法，并检索它的返回对象。构造函数不带任何参数。该方法不带任何参数，返回一个Microsoft.OData.Edm.IEdmModel
到目前为止我尝试过的事情：
- 创建一个单独的appdomain，并调用
domain.CreateInstanceAndUnwrap：
AppDomainSetup setup = new AppDomainSetup()
{
ApplicationBase = path
PrivateBinPath = path
};
AppDomain domain = AppDomain.CreateDomain("Child", null, setup);
AssemblyName assemblyName = AssemblyName.GetAssemblyName(assemblyPath);
object instance = domain.CreateInstanceAndUnwrap(assemblyName.FullName, className);
- 创建一个扩展
MarshalByRefObject的类，并使用它来加载程序集、调用函数并封送返回类型：
AppDomain domain = AppDomain.CreateDomain("Child");
BinaryMarshal marshal = (BinaryMarshal) domain.CreateInstanceAndUnwrap(typeof(BinaryMarshal).Assembly.FullName, typeof(BinaryMarshal).FullName);
IEdmModel model = marshal.LoadEdmModel(path, className, functionName);
//BinaryMarshal.cs:
internal class BinaryMarshal : MarshalByRefObject
{
public IEdmModel LoadEdmModel(string binary, string className, string functionName)
{
Assembly assembly = Assembly.LoadFrom(binary);
Type type = assembly.GetType(className); //returns null because of exception listed below
}
}
在这两种情况下，由于以下异常（从Fuslogvw.exe 获得），代码都不起作用：
*** Assembly Binder Log Entry (4/29/2019 @ 10:34:48 AM) ***
The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Running under executable C:\develop\parent\out\debug-amd64\Parent.exe
--- A detailed error log follows.
=== Pre-bind state information ===
LOG: DisplayName = System.Runtime, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
(Fully-specified)
LOG: Appbase = file:///C:/develop/parent/out/debug-amd64/
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = Parent.exe
Calling assembly : Child, Version=5.0.0.0, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in LoadFrom load context.
WRN: Native image will not be probed in LoadFrom context. Native image will only be probed in default load context, like with Assembly.Load().
LOG: Using application configuration file: C:\develop\parent\out\debug-amd64\Parent.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.Runtime, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/develop/parent/out/debug-amd64//System.Runtime.DLL.
LOG: Attempting download of new URL file:///C:/develop/parent/out/debug-amd64//System.Runtime/System.Runtime.DLL.
LOG: Attempting download of new URL file:///C:/develop/parent/out/debug-amd64//System.Runtime.EXE.
LOG: Attempting download of new URL file:///C:/develop/parent/out/debug-amd64//System.Runtime/System.Runtime.EXE.
LOG: Attempting download of new URL file:///C:/develop/child/out/debug-amd64/netcoreapp2.0/System.Runtime.DLL.
LOG: Attempting download of new URL file:///C:/develop/child/out/debug-amd64/netcoreapp2.0/System.Runtime/System.Runtime.DLL.
LOG: Attempting download of new URL file:///C:/develop/child/out/debug-amd64/netcoreapp2.0/System.Runtime.EXE.
LOG: Attempting download of new URL file:///C:/develop/child/out/debug-amd64/netcoreapp2.0/System.Runtime/System.Runtime.EXE.
LOG: All probing URLs attempted and failed.
据我所知，它正在尝试加载 System.Runtime，但由于父应用已经加载了不同版本的 System.Runtime，因此失败。
这可能吗？
【问题讨论】：