Enumerating AppDomains
Recently I was writing a sample app showing some new MAF (Managed Add-In Framework) features that will be released very soon. Stay tuned.
As I was showing isolation and unload-ability, I wanted to enumerate the AppDomain's in the current process. Surprisingly there is no managed API in the BCL to show AppDomains L Using Interop however, we can list the AppDomains.
using System.Runtime.InteropServices; // for domain enum
using mscoree; // for domain enum. Add the following as a COM reference - C:\WINDOWS\Microsoft.NET\Framework\vXXXXXX\mscoree.tlb
namespace MyNS
{
public class ListProcessAppDomains
{
public static IList<AppDomain> GetAppDomains()
{
IList<AppDomain> _IList = new List<AppDomain>();
IntPtr enumHandle = IntPtr.Zero;
CorRuntimeHostClass host = new mscoree.CorRuntimeHostClass();
try
{
host.EnumDomains(out enumHandle);
object domain = null;
while (true)
{
host.NextDomain(enumHandle, out domain);
if (domain == null) break;
AppDomain appDomain = (AppDomain)domain;
_IList.Add(appDomain);
}
return _IList;
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
return null;
}
finally
{
host.CloseEnum(enumHandle);
Marshal.ReleaseComObject(host);
}
}
}
