How to add a new application pool in iis 5.1 in the code c#?

Question

I am trying to add a website on IIS 5.1

When I try to create an application pool for my new site with my function below, I have this strange error "system.directoryNotFound Exception ... in CreateAppPool"

The strangest thing is that the creation of the application pool function perfectly on a pc windows 7 with IIS7 but not on windows XP with ISS5.1 The following path "IIS :/ / localhost/W3SVC/AppPools" is different on IIS5.1?

public static CreateAppPool(string name)
        {
            string machineName = System.Environment.GetEnvironmentVariable("COMPUTERNAME");
            DirectoryEntry Service = new DirectoryEntry("IIS://"+machineName+"/W3SVC/AppPools");

            // create new app pool
            DirectoryEntry appPool = Service.Children.Add(name, "IIsApplicationPool");
            appPool.CommitChanges();
            Service.CommitChanges();

        }

Answer 1

You can't create an application pool in IIS 5, but you can create a new virtual directory under the Default Web site and make it an application.