Public Class WorkQueue 
   Inherits CSharpTest.Net.Threading.WorkQueue(Of Action)
   Implements CSharpTest.Net.Threading.IWorkQueue(Of Action) 

public class WorkQueue : CSharpTest.Net.Threading.WorkQueue<Action>, CSharpTest.Net.Threading.IWorkQueue<Action>  

using (ManualResetEvent finished = new ManualResetEvent(false))
using (WorkQueue worker = new WorkQueue(2))
{
    worker.Enqueue(delegate() { finished.Set(); });
    Assert.IsTrue(finished.WaitOne(100, false));
}

Using finished As New ManualResetEvent(False)
    Using worker As New WorkQueue(2)
        worker.Enqueue(Function() Do
            finished.[Set]()
        End Function)
        Assert.IsTrue(finished.WaitOne(100, False))
    End Using
End Using