IIS6: separated application pool

When IIS runs multiple versions of .NET web projects, collision happens sometimes.
So, I required to assign my web project in separated application pool under Windows 2003 /IIS6 programmatically.

It is easy through System.DirectoryServices of .NET
There is, I create virtual directory "myWebDir" and assign it to new pool with the name "myAppPool":

DirectoryEntry folderRoot = new DirectoryEntry("IIS://localhost/W3SVC/1/Root"); DirectoryEntry virDir = folderRoot.Children.Add("myWebDir", "IIsWebVirtualDir"); object[] param ={ 0, "myAppPool", true }; virtDir.Invoke("AppCreate3", param); //set virtual directory properties //....... newVirDir.CommitChanges();

Application pool is created automatically if third parameter is a true in the param array.

However, I would like also to manage my application pools without specific virtual directory.
Here are examples to create/remove application pools:

Create Application pool:

string appPoolName = "myAppPool"; DirectoryEntry poolRoot = new DirectoryEntry("IIS://localhost/W3SVC/AppPools"); if (!DirectoryEntry.Exists(IISAppPoolRootPath + "/" + appPoolName); { DirectoryEntry pool = poolRoot.Children.Add(appPoolName, "IIsApplicationPool"); pool.CommitChanges(); }

Remove Application pool:

string appPoolName = "myAppPool"; DirectoryEntry poolRoot = new DirectoryEntry("IIS://localhost/W3SVC/AppPools"); DirectoryEntry pool = poolRoot.Children.Find(appPoolName, "IIsApplicationPool"); if (pool != null) { poolRoot.Children.Remove(pool); poolRoot.CommitChanges(); }

Remove only works, if no one web application assigned to pool.