/// <summary>
        /// When calling a WCF service it is not possible to use a using(...) statement to close 
        /// the connection after the service call.  A call to Dispose may cause an exception
        /// which is against MS recommendation. As such when calling a WCF Service you can 
        /// us the Using method to correctly close the connection after your request or requests.
        /// 
        /// <remarks>This can be used with the following code <br/>
        /// <code>
        /// IMyService service = new MyService(); // Gets a proxy to WCF service
        /// service.Using(()=>
        /// {
        ///     service.DoSomthing();
        ///     service.DoSomethingElse("Hello World");
        ///     Console.WriteLine();
        /// });
        /// </code>
        /// </remarks>
        /// </summary>
        /// <param name="service">The IService instance you wish will close after invocation</param>
        /// <param name="action">The Action delegate to execute before the service is closed.</param>
        public static void Using(this IService service, Action action)
        {
            ICommunicationObject communicationObject = service as ICommunicationObject;
            try
            {
                action();
                service.SafeDispose();
            }
            catch (CommunicationException cex)
            {
                Log.Error(String.Format("CommunicationException occured calling service method on {0}", service.GetType().Name), cex);

                if (communicationObject != null)
                    communicationObject.Abort();
                throw;
            }
            catch (TimeoutException tex)
            {
                Log.Error(String.Format("TimeoutException occured calling service method on {0}", service.GetType().Name), tex);

                if (communicationObject != null)
                    communicationObject.Abort();
                throw;
            }
        }

WCF Using Extension Method

C#