c# - 如何带参数调用crossappdomaindelegate-Method

Question

我想用需要参数的方法名称调用方法 crossappdomaindelegate。

例子:

myAppdomain.DoCallback(new CrossAppDomainDelegate(MyMethod));

private static void MyMethod(string myParam)
{
  Console.Write("my param="+ myParam);
}

如何在 new CrossAppDomainDelegate(MyMethod....) 中传递参数？

更新:只是为了完成 Maarten 对我的具体案例的回答:我还添加了一个 ResolveHandler 来查找已经加载的程序集。就好像其他人有类似的问题。

_myNewAppDomain.AssemblyResolve += MyResolveEventHandler;

        public static Assembly MyResolveEventHandler(Object sender, ResolveEventArgs args)
        {
            var dllName = args.Name.Split(',')[0];

            var currentAppdomain = (AppDomain) sender;

            var file = currentAppdomain.GetAssemblies().FirstOrDefault(f => f.FullName.Split(',')[0] == dllName);

            return file;
        }

Answer 1

这是在另一个 AppDomain 中检索程序集中类型的一种方法。

首先，定义一些虚拟类:

public class X1 { }
public class X2 { }
public class X3 { }
public class X4 { }
public class X5 { }

然后定义一个特定的类来从程序集中加载类型:

public class TypesProvider : MarshalByRefObject
{
    public string[] RetrieveTypes()
    {
        return Assembly.GetExecutingAssembly().GetTypes().Select(x => x.FullName).ToArray();
    }

    public string[] RetrieveTypesForAnotherAssembly(string assemblyFile)
    {
        return Assembly.LoadFile(assemblyFile).GetTypes().Select(x => x.FullName).ToArray();
    }
}

然后使用该类从程序集中检索类型:

class Program
{
    static void Main(string[] args)
    {
        var domain = AppDomain.CreateDomain("type-provider-appdomain");
        var typeProviderInstance = domain.CreateInstanceAndUnwrap(typeof(TypesProvider).Assembly.FullName, typeof(TypesProvider).FullName) as TypesProvider;
        if (typeProviderInstance != null)
        {
            Console.WriteLine("Types for the executing assembly");
            var types = typeProviderInstance.RetrieveTypes();
            foreach (var type in types)
            {
                Console.WriteLine(type);
            }
            var assemblyFile = new FileInfo("EntityFramework.dll").FullName;
            Console.WriteLine("Types for assembly " + assemblyFile);
            types = typeProviderInstance.RetrieveTypesForAnotherAssembly(assemblyFile);
            foreach (var type in types)
            {
                Console.WriteLine(type);
            }
        }
        Console.ReadLine();
    }
}

TypesProvider 的第一次使用将产生虚拟类

Types for the executing assembly
SO_3543881.Program
SO_3543881.TypesProvider
SO_3543881.X1
SO_3543881.X2
SO_3543881.X3
SO_3543881.X4
SO_3543881.X5

第二次调用将从 EntityFramework 程序集中生成所有类型(如果您已将其放在 bin 文件夹中)。