Disposing client after creation with WebChannelFactory

In my current production code, and according to documentation on msdn, the way to create a client is this

using (WebChannelFactory<IServiceInterface> cf
      = new WebChannelFactory<IServiceInterface>("http://service.url"))
{
    IServiceInterface client = cf.CreateChannel();
    client.CallTheMethod();
}

given that I have this interface:

public interface IServiceInterface
{
    void CallTheMethod();
}

However I noticed开发者_StackOverflow社区 that the object client created by the WebChannelFactory also implements IDisposable. So I want to dispose this object also. I didn't find any other way than:

using (WebChannelFactory<IServiceInterface> cf
      = new WebChannelFactory<IServiceInterface>("http://service.url"))
using(IDisposable client = (IDisposable)cf.CreateChannel())
{
    ((IServiceInterface)client).CallTheMethod();
}

I find this ugly. So :

• Do I really need to dispose it ? I mean that may be it is disposed when you disposed the factory (if the factory keeps a reference to every object it has created maybe) ?
• If yes, do you have a better way ?

This is a very complex issue. Even by Microsoft's own admission, disposing of channel factories was a bad design which was changed multiple times so short answer is no, you need to use something alternative to it.

Here is an alternative method to disposing.