如何将 AppDomain.CreateDomain 与 AssemblyResolve 结合使用？

Question

我想使用内存从 WCF 加载我的程序集。在以下情况下一切正常：

AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
Assembly[] assBefore = AppDomain.CurrentDomain.GetAssemblies();
foreach (byte[] binary in deCompressBinaries)
    loadedAssembly = AppDomain.CurrentDomain.Load(binary);

但我想使用 AppDomain.CreateDomain，而不是当前域：

protected void LoadApplication()
{
    this.ApplicationHost = AppDomain.CreateDomain("TestService", null, new AppDomainSetup
    {
        ApplicationBase = AppDomain.CurrentDomain.SetupInformation.ApplicationBase
    });

    ApplicationHost.AssemblyResolve += new ResolveEventHandler(OnAssemblyResolve);
    foreach (AssemblyName asmbly in System.Reflection.Assembly.GetExecutingAssembly().GetReferencedAssemblies())
    {
        ApplicationHost.Load(asmbly);
    }
    List<byte[]> deCompressBinaries = new List<byte[]>();
    foreach (var item in AppPackage.Item.AssemblyPackage)
        deCompressBinaries.Add(item.Buffer);
    var decompressvalues =  DeCompress(deCompressBinaries);
    deCompressBinaries.Clear();
    deCompressBinaries = decompressvalues.ToList();

    foreach (byte[] binary in deCompressBinaries)
        ApplicationHost.Load(binary);

    Assembly[] assAfter = AppDomain.CurrentDomain.GetAssemblies();
}

Assembly OnAssemblyResolve(object sender, ResolveEventArgs args)
{
    return Assembly.Load(args.Name);
}

我有两个类库，ClassLibrary1 和 ClassLibrary2，使用以下代码：

namespace ClassLibrary2
{
    public class Class1 : MarshalByRefObject
    {
        public Class1()
        {

        }

        public int GetSum(int a , int b)
        {
            try
            {
                ClassLibrary1.Class1 ctx = new ClassLibrary1.Class1();
                return ctx.Sum(a, b);
            }
            catch
            {
                return -1;
            }
        }

        public int GetMultiply(int a, int b)
        {
            return a * b;
        }
    }
}

Classlibrary2 依赖于 ClassLibrary1。所以我正在使用程序集解析器。但我在 ApplicationHost.Load(binary); 上遇到错误：

错误：无法加载文件或程序集“ClassLibrary1，Version=1.0.0.0，Culture=neutral，PublicKeyToken=null”或其依赖项之一。系统找不到指定的文件。

它也没有触发 ASSEMBLYRESOLVER。我的光标不会转到 Assemblyresolver 方法。如何将 AppDomain.CreateDomain 与 resolve 方法一起使用？

Answer 1

我个人不喜欢从字节数组加载程序集。我认为最好将您的程序集保存到一个临时文件夹，然后从该文件夹加载它们。看看这篇文章：Application Domains is hard…。