Domain

[shafiqtukhi]

Type of issue

Code doesn't work

Description

using System; using System.Reflection; using System.Threading;

class Module1 { public static void Main() { // Get and display the friendly name of the default AppDomain. string callingDomainName = Thread.GetDomain().FriendlyName; Console.WriteLine(callingDomainName);

    // Get and display the full name of the EXE assembly.
    string exeAssembly = Assembly.GetEntryAssembly().FullName;
    Console.WriteLine(exeAssembly);

    // Construct and initialize settings for a second AppDomain.
    AppDomainSetup ads = new AppDomainSetup();
    ads.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory;

    ads.DisallowBindingRedirects = false;
    ads.DisallowCodeDownload = true;
    ads.ConfigurationFile =
        AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;

    // Create the second AppDomain.
    AppDomain ad2 = AppDomain.CreateDomain("AD #2", null, ads);

    // Create an instance of MarshalbyRefType in the second AppDomain.
    // A proxy to the object is returned.
    MarshalByRefType mbrt =
        (MarshalByRefType) ad2.CreateInstanceAndUnwrap(
            exeAssembly,
            typeof(MarshalByRefType).FullName
        );

    // Call a method on the object via the proxy, passing the
    // default AppDomain's friendly name in as a parameter.
    mbrt.SomeMethod(callingDomainName);

    // Unload the second AppDomain. This deletes its object and
    // invalidates the proxy object.
    AppDomain.Unload(ad2);
    try
    {
        // Call the method again. Note that this time it fails
        // because the second AppDomain was unloaded.
        mbrt.SomeMethod(callingDomainName);
        Console.WriteLine("Sucessful call.");
    }
    catch(AppDomainUnloadedException)
    {
        Console.WriteLine("Failed call; this is expected.");
    }
}

}

// Because this class is derived from MarshalByRefObject, a proxy // to a MarshalByRefType object can be returned across an AppDomain // boundary. public class MarshalByRefType : MarshalByRefObject { // Call this method via a proxy. public void SomeMethod(string callingDomainName) { // Get this AppDomain's settings and display some of them. AppDomainSetup ads = AppDomain.CurrentDomain.SetupInformation; Console.WriteLine("AppName={0}, AppBase={1}, ConfigFile={2}", ads.ApplicationName, ads.ApplicationBase, ads.ConfigurationFile );

    // Display the name of the calling AppDomain and the name
    // of the second domain.
    // NOTE: The application's thread has transitioned between
    // AppDomains.
    Console.WriteLine("Calling from '{0}' to '{1}'.",
        callingDomainName,
        Thread.GetDomain().FriendlyName
    );
}

}

/* This code produces output similar to the following:

AppDomainX.exe AppDomainX, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null AppName=, AppBase=C:\AppDomain\bin, ConfigFile=C:\AppDomain\bin\AppDomainX.exe.config Calling from 'AppDomainX.exe' to 'AD #2'. Failed call; this is expected. */ Enter feedback here]

Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.appdomainsetup.disallowcodedownload?view=netframework-4.8.1

Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System/AppDomainSetup.xml

Document Version Independent Id

199740aa-347e-907c-62ee-1e42432b2476

Platform Id

9a1eb9e6-36b5-c41f-9d01-aa3188abd015

Article author

@dotnet-bot