NetFwTypeLib and ComElevation dllhost fails to exit

Question

I am using the comelevation sample from the vistabridge library in the windows sdk to elevate a .net class I exported to a com typelib.

To demonstrate what I have done consider something like this:

    class Firewall:IDisposable
    {
        INetFwPolicy2 policy = (INetFwPolicy2)Activator.CreateInstance(...);
       
        bool FirewallEnabled
        {
            get { return policy.get_FirewallEnabled(profileType2); }
            set { policy.set_FirewallEnabled(profileType2, value); }
        }

        void EnableRule(string group, string ruleName, bool enable)
        {
            IEnumerator enumerator = null;

            try
            {
                enumerator = this.policy.Rules.GetEnumerator();

                while (enumerator.MoveNext())
                {

                    INetFwRule iNetRule = (INetFwRule)enumerator.Current;

                    if (string.Equals(iNetRule.Grouping, group, StringComparison.OrdinalIgnoreCase))
                    {
                        if (string.Equals(iNetRule.Name, ruleName, StringComparison.OrdinalIgnoreCase))
                        {
                            iNetRule.Enabled = enable;
                            Marshal.ReleaseComObject(iNetRule);
                            break;
                        }
                    }
                    Marshal.ReleaseComObject(iNetRule);
                }
            }
            finally
            {
                if (enumerator is IDisposable)
                {
                    (enumerator as IDisposable).Dispose();
                }
            }
        }


 
      public void Dispose()
      {
 
         Marshal.ReleaseComObject(policy.Rules);
 
         Marshal.ReleaseComObject(policy);
      }

    }

When I create my elevated com object and change the value of the property, all is well. When I do the same and call the function, it works but the dllhost process fails to exit. I am calling Marshal.ReleaseComObject on my elevated class. I narrowed the problem down to: Any time I iterate through the INetFwPolicy2.Rules the dllhost process fails to exit. In the above codeblock the function calls Marshal.Release... on each rule, I have tried without this call as well to no avail.

Any thoughts?

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Answer 1

Hi element109: 

This forum is to support questions on Open Specifications technical interoperability scenarios.

There are very helpful communities of .Net developers on the MSDN that may assist you with your solution. I suggest you post your question on one these forums at the following link:

http://social.msdn.microsoft.com/Forums/en-US/category/netdevelopment

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Regards, Obaid Farooqi

Answer 2

Thanks Obaid, I was not sure if this was the correct forum or not. I should note that I selected this forum from the list of forums on the msdn website. Maybe the forums could benefit from some way of funneling people to the correct forum. From the title I was under the impression this forum was for Intereop programming technical questions. Sorry for my mistake. I don't suppose you could be persuaded to move my thread to the correct forum?

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Answer 3

I have moved the thread to here:

http://social.msdn.microsoft.com/Forums/en-US/clr/thread/0fa5b971-f128-4f06-8560-59a26a1bf058

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