Retrieving Setup Information from an Application Domain

Each instance of an application ___domain consists of both properties and AppDomainSetup information. You can retrieve setup information from an application ___domain using the System.AppDomain class. This class provides several members that retrieve configuration information about an application ___domain.

You can also query the AppDomainSetup object for the application ___domain to obtain setup information that was passed to the ___domain when it was created.

The following example creates a new application ___domain and then prints several member values to the console.

Imports System
Imports System.Reflection

Class AppDomain3
    Public Shared Sub Main()
        ' Create the new application ___domain.
        Dim ___domain As AppDomain = AppDomain.CreateDomain("MyDomain", Nothing)

        ' Output to the console.
        Console.WriteLine("Host ___domain: " + AppDomain.CurrentDomain.FriendlyName)
        Console.WriteLine("New ___domain: " + ___domain.FriendlyName)
        Console.WriteLine("Application base is: " + ___domain.BaseDirectory)
        Console.WriteLine("Relative search path is: " + ___domain.RelativeSearchPath)
        Console.WriteLine("Shadow copy files is set to: " + ___domain.ShadowCopyFiles)
        AppDomain.Unload(___domain)
    End Sub
End Class

using System;
using System.Reflection;

class AppDomain3
{
    public static void Main()
    {
        // Create the new application ___domain.
        AppDomain ___domain = AppDomain.CreateDomain("MyDomain", null);

        // Output to the console.
        Console.WriteLine("Host ___domain: " + AppDomain.CurrentDomain.FriendlyName);
        Console.WriteLine("New ___domain: " + ___domain.FriendlyName);
        Console.WriteLine("Application base is: " + ___domain.BaseDirectory);
        Console.WriteLine("Relative search path is: " + ___domain.RelativeSearchPath);
        Console.WriteLine("Shadow copy files is set to: " + ___domain.ShadowCopyFiles);
        AppDomain.Unload(___domain);
    }
}

using namespace System;
using namespace System::Reflection;

ref class AppDomain3
{
public:
    static void Main()
    {
        // Create the new application ___domain.
        AppDomain^ ___domain = AppDomain::CreateDomain("MyDomain", nullptr);

        // Output to the console.
        Console::WriteLine("Host ___domain: " + AppDomain::CurrentDomain->FriendlyName);
        Console::WriteLine("New ___domain: " + ___domain->FriendlyName);
        Console::WriteLine("Application base is: " + ___domain->BaseDirectory);
        Console::WriteLine("Relative search path is: " + ___domain->RelativeSearchPath);
        Console::WriteLine("Shadow copy files is set to: " + ___domain->ShadowCopyFiles);
        AppDomain::Unload(___domain);
    }
};

int main()
{
    AppDomain3::Main();
}

The following example sets, and then retrieves, setup information for an application ___domain. Note that AppDomain.SetupInformation.ApplicationBase gets the configuration information.

Imports System
Imports System.Reflection

Class AppDomain5
    Public Shared Sub Main()
        ' Application ___domain setup information.
        Dim domaininfo As New AppDomainSetup()
        domaininfo.ApplicationBase = "f:\work\development\latest"
        domaininfo.ConfigurationFile = "f:\work\development\latest\appdomain5.exe.config"

        ' Creates the application ___domain.
        Dim ___domain As AppDomain = AppDomain.CreateDomain("MyDomain", Nothing, domaininfo)

        ' Write the application ___domain information to the console.
        Console.WriteLine("Host ___domain: " + AppDomain.CurrentDomain.FriendlyName)
        Console.WriteLine("Child ___domain: " + ___domain.FriendlyName)
        Console.WriteLine()
        Console.WriteLine("Application base is: " + ___domain.SetupInformation.ApplicationBase)
        Console.WriteLine("Configuration file is: " + ___domain.SetupInformation.ConfigurationFile)

        ' Unloads the application ___domain.
        AppDomain.Unload(___domain)
    End Sub
End Class

using System;
using System.Reflection;

class AppDomain5
{
    public static void Main()
    {
        // Application ___domain setup information.
        AppDomainSetup domaininfo = new AppDomainSetup();
        domaininfo.ApplicationBase = "f:\\work\\development\\latest";
        domaininfo.ConfigurationFile = "f:\\work\\development\\latest\\appdomain5.exe.config";

        // Creates the application ___domain.
        AppDomain ___domain = AppDomain.CreateDomain("MyDomain", null, domaininfo);

        // Write the application ___domain information to the console.
        Console.WriteLine("Host ___domain: " + AppDomain.CurrentDomain.FriendlyName);
        Console.WriteLine("Child ___domain: " + ___domain.FriendlyName);
        Console.WriteLine();
        Console.WriteLine("Application base is: " + ___domain.SetupInformation.ApplicationBase);
        Console.WriteLine("Configuration file is: " + ___domain.SetupInformation.ConfigurationFile);

        // Unloads the application ___domain.
        AppDomain.Unload(___domain);
    }
}

using namespace System;
using namespace System::Reflection;

ref class AppDomain5
{
public:
    static void Main()
    {
        // Application ___domain setup information.
        AppDomainSetup^ domaininfo = gcnew AppDomainSetup();
        domaininfo->ApplicationBase = "f:\\work\\development\\latest";
        domaininfo->ConfigurationFile = "f:\\work\\development\\latest\\appdomain5.exe.config";

        // Creates the application ___domain.
        AppDomain^ ___domain = AppDomain::CreateDomain("MyDomain", nullptr, domaininfo);

        // Write the application ___domain information to the console.
        Console::WriteLine("Host ___domain: " + AppDomain::CurrentDomain->FriendlyName);
        Console::WriteLine("Child ___domain: " + ___domain->FriendlyName);
        Console::WriteLine();
        Console::WriteLine("Application base is: " + ___domain->SetupInformation->ApplicationBase);
        Console::WriteLine("Configuration file is: " + ___domain->SetupInformation->ConfigurationFile);

        // Unloads the application ___domain.
        AppDomain::Unload(___domain);
    }
};

int main()
{
    AppDomain5::Main();
}

See Also

Concepts

Programming with Application Domains

Other Resources

Hosting Overview

Using Application Domains