Hot to get list of all AppDomains inside current process?

In my earlier post, I have explained how to create AppDomain inside process and how we can share data between AppDomains. As per request from one of you, in this post I am going to explain how we can get list of all AppDomains inside process.

To enumerate all the AppDomains inside process we can use class called CorRuntimeHost. This class is available inside mscoree namespace and can be added externally from C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscoree.tlb location. This class provides EnumDomains method which is used to enumerate AppDomains inside process. The NextDomain method of this class is used to get next available AppDomain if no AppDomain found, sets domain to null. 

Let’s have a look on below code snippet.

AppDomain.CreateDomain("AppDomain 1");

AppDomain.CreateDomain("AppDomain 2");

AppDomain.CreateDomain("AppDomain 3");

List<AppDomain> appDomains = new List<AppDomain>();

IntPtr handle = IntPtr.Zero;

CorRuntimeHost host = new CorRuntimeHost();

try

{

    host.EnumDomains(out handle);

    while (true)

    {

        object domain;

        host.NextDomain(handle, out domain);

        if (domain == null)

            break;

        appDomains.Add((AppDomain)domain);

    }

}

finally

{

    host.CloseEnum(handle);

}

foreach (AppDomain appDom in appDomains)

{

    Console.WriteLine(appDom.FriendlyName);

}

Output –

AppDomain 1

AppDomain 2

AppDomain 3

How to get specific AppDomin from process?

We can get specific AppDomain using the same code but with little modification. Let’s have a look on below code.

public void GetAppDomain(string name)

{

    IntPtr handle = IntPtr.Zero;

    CorRuntimeHost host = new CorRuntimeHost();

    try

    {

        host.EnumDomains(out handle);

        while (true)

        {

            object domain;

            host.NextDomain(handle, out domain);

            AppDomain myAppDomain = domain as AppDomain;

            if (myAppDomain == null)

                break;

            if (myAppDomain.FriendlyName.Equals(name))

            {

            Console.WriteLine("AppDomain Name - {0}", myAppDomain.FriendlyName);

            }

        }

    }

    finally

    {

        host.CloseEnum(handle);

    }

}

See Also –

How to create custom application domain?

Working with Performance Counters in C#? 

How to ping remote machine using C#?