Question

i really wonder why assemblyResolver not working? Also i can not use

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

how to fire AssemblyResolve? please look my reference question: http://stackoverflow.com/questions/9721686/how-to-use-appdomain-createdomain-with-assemblyresolve

    protected void LoadApplication()
    {

        AppDomainSetup domainSetup = new AppDomainSetup();
        domainSetup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory;
        domainSetup.DisallowBindingRedirects = false;
        domainSetup.DisallowCodeDownload = true;
        domainSetup.LoaderOptimization = LoaderOptimization.SingleDomain;
        //domainSetup.ConfigurationFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
        ApplicationHost = AppDomain.CreateDomain("Test.Service", null, domainSetup);
        object obj = ApplicationHost.CreateInstanceAndUnwrap("Test.Process", "Test.ApplicationLoader");

        Assembly objExecutingAssemblies = Assembly.GetExecutingAssembly();
        AssemblyName[] arrReferencedAssmbNames = objExecutingAssemblies.GetReferencedAssemblies();

        foreach (AssemblyName assName in arrReferencedAssmbNames)
        {
            ApplicationHost.Load(assName);
        }


        ApplicationHost.AssemblyResolve += new ResolveEventHandler(OnAssemblyResolve);

        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);
    }

Answer 1

The AssemblyResolve will never fire, because you’re loading up all the assemblies in the LoadApplication method – AssemblyResolve will only be called if the required assembly reference fails to be resolved.

I would suggest running fuslogvw.exe so that you can visualize what is going on.

If you want to load the assemblies on an as-needed basis, the block of code:

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();

will need to be worked into the AssemblyResolve. The block currently loads EVERYTHING into the AppDomain, so you’d have to rework that piece of logic.

Of course, the other thing you might want do is not to re-invent the wheel, and use ILMerge.