RE: Dynamic Load Assembly

From: BrianS (BrianS_at_discussions.microsoft.com)
Date: 01/06/05

  • Next message: Joakim Karlsson: "Re: Unexpected integer addition result" 
    Date: Thu, 6 Jan 2005 12:43:04 -0800

    In otherwords,

    AppDomain.CurrentDomain.GetAssemblies

    returns an unloaded/unreferenced assembly.why?

    "BrianS" wrote:

    > I have Web Service (A) that dynamically loads a private assembly (B). I do
    > NOT reference B in A. ( I do reference A in B, but that should not matter?).
    > Both these Assemblies reside in the A's /Bin.
    >
    > I dynamically load B and Invoke a Method:
    >
    > 'Create evidence for the new appdomain.
    > Dim adevidence As System.Security.Policy.Evidence =
    > AppDomain.CurrentDomain.Evidence
    >
    > ' Create the new application domain.
    > Dim domain As AppDomain = AppDomain.CreateDomain("MyDomain",
    > adevidence,AppDomain.CurrentDomain.SetupInformation)
    > Dim myAssembly As [Assembly] = domain.Load(strAssemblyName)
    > Dim sysType As Type = myAssembly.GetType(strClassName)
    >
    > obj = Activator.CreateInstance(sysType, New Object())
    >
    > ' Invoke the method
    > Dim intBindings As Integer = BindingFlags.DeclaredOnly Or
    > BindingFlags.Public Or BindingFlags.NonPublic Or BindingFlags.Instance Or
    > BindingFlags.InvokeMethod
    > returnObj= obj.GetType.InvokeMember(strMethod, intBindings, Nothing, obj,
    > New Object())
    >
    > ' Unload the application domain.
    > AppDomain.Unload(domain)
    >
    > It was my understanding to load the assembly into a new AppDomain so I can
    > explicity Unload the AppDomain to free resources.
    >
    > However, when I excecute my Web Service (A) and I am on the Service Page
    > (where all methods are listed) I see that B has already been loaded in the
    > aspnet_wp.exe process using Process Explorer?
    >
    > Why would this be? Is it because, using the Load context, since assemblies
    > reside in the same path, .Net automactically loads them at startup?
    >
    > I tried commenting out the code above, but it still loads the assembly at
    > startup.
    >
    >

  • Next message: Joakim Karlsson: "Re: Unexpected integer addition result"

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