Solved

C# WCF proxy Help me understand this example code...

Posted on 2008-06-23
5
1,842 Views
Last Modified: 2013-12-16
I am trying to use this class for calling my WCF Service


http://electroholic.com/?p=10

in the sample the author has this code
ExampleWCFClient client = proxy = new ExampleWCFClient();

this will not compile.


using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Text;

using System.ServiceModel;
 

namespace ConsoleApplication1

{

    public delegate void SafeProxyInvocationHandler(out ICommunicationObject proxy);
 

    public static class SafeProxyHandler

    {

        public static Exception Invoke(SafeProxyInvocationHandler del)

        {

            return Invoke(null, del);

        }
 

        public static Exception Invoke(string messageTemplate,

                                        SafeProxyInvocationHandler del)

        {

            if (del == null)

                throw new ArgumentException("Expected delegate instance for handler to invoke!");
 

            ICommunicationObject proxy = null;
 

            try

            {

                del(out proxy);

                HandleClose(proxy);
 

                return null;

            }

            catch (TimeoutException exception)

            {

                HandleException(proxy, exception, messageTemplate);

                return exception;

            }

            catch (FaultException exception)

            {

                HandleException(proxy, exception, messageTemplate);

                return exception;

            }

            catch (CommunicationException exception)

            {

                HandleException(proxy, exception, messageTemplate);

                return exception;

            }

            catch (Exception exception)

            {

                HandleException(proxy, exception, messageTemplate);

                return exception;

            }

        }
 

        private static void HandleClose(ICommunicationObject proxy)

        {

            if (proxy != null

                && proxy.State != CommunicationState.Closed

                && proxy.State != CommunicationState.Closing

                && proxy.State != CommunicationState.Faulted)

                proxy.Close();

        }
 

        private static void HandleException(ICommunicationObject proxy,

                                                          Exception e,

                                                          string messageTemplate)

        {

            AbortClient(proxy);

            ReportException(e, messageTemplate);

        }
 

        private static void ReportException(Exception e, string template)

        {

            Trace.WriteLine(FormatMessage(template, e.GetType().Name));

        }
 

        private static string FormatMessage(string message, params string[] args)

        {

            return args == null || args.Length == 0 ? message : string.Format(message, args);

        }
 

        private static void AbortClient(ICommunicationObject proxy)

        {

            if (proxy != null)

                proxy.Abort();

        }

    }

}

Open in new window

0
Comment
Question by:JonMny
  • 2
5 Comments
 
LVL 16

Expert Comment

by:ororiole
ID: 21850410
What error are you getting? And post the code where you used it so we can take a look at the problem.
0
 
LVL 9

Accepted Solution

by:
JonMny earned 0 total points
ID: 21883003
ExampleWCFClient client = proxy = new ExampleWCFClient();


I fixed the problem, needed to cast the wcf
0
 
LVL 16

Expert Comment

by:ororiole
ID: 21886205
I did request of the asker to post the code where he was using that line. As It is not in the first post. And post the error he was getting. Since I added value to the question, and several days elapsed, I'm confident that at least partial value should be awarded.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this? (CODE) In .NET 3.5, this is possible…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

861 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

29 Experts available now in Live!

Get 1:1 Help Now