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    <p>This is a barebone example with a self hosted service and client.</p> <p><strong>Contracts</strong></p> <pre><code>[ServiceContract(CallbackContract = typeof(IService1Callback), SessionMode=SessionMode.Required)] public interface IService1 { [OperationContract] void Process(string what); } public interface IService1Callback { [OperationContract] void Progress(string what, decimal percentDone); } </code></pre> <p><strong>Server</strong></p> <pre><code>[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)] public class Service1 : IService1 { public void Process(string what) { Console.WriteLine("I'm processing {0}", what); for (int i = 0; i &lt; 10; i++) { OperationContext.Current.GetCallbackChannel&lt;IService1Callback&gt;().Progress(what, (i+1)*0.1M); } } } class Program { static void Main(string[] args) { using (ServiceHost host = new ServiceHost( typeof(Service1), new Uri[] { new Uri("net.tcp://localhost:6789") })) { host.AddServiceEndpoint(typeof(IService1), new NetTcpBinding(SecurityMode.None), "Service1"); host.Open(); Console.ReadLine(); host.Close(); } } } </code></pre> <p><strong>Client</strong></p> <pre><code>public class CallbackHandler : IService1Callback { public void Progress(string what, decimal percentDone) { Console.WriteLine("Have done {0:0%} of {1}", percentDone, what); } } class Program { static void Main(string[] args) { // Setup the client var callbacks = new CallbackHandler(); var endpoint = new EndpointAddress(new Uri("net.tcp://localhost:6789/Service1")); using (var factory = new DuplexChannelFactory&lt;IService1&gt;(callbacks, new NetTcpBinding(SecurityMode.None), endpoint)) { var client = factory.CreateChannel(); client.Process("JOB1"); Console.ReadLine(); factory.Close(); } } } </code></pre> <p>This uses a duplex channel over net.tcp with communications being triggered by the server to inform the client of progress updates.</p> <p>The client will display:</p> <pre><code>Have done 10% of JOB1 Have done 20% of JOB1 Have done 30% of JOB1 Have done 40% of JOB1 Have done 50% of JOB1 Have done 60% of JOB1 Have done 70% of JOB1 Have done 80% of JOB1 Have done 90% of JOB1 Have done 100% of JOB1 </code></pre>
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    1. POHelp with WCF Service and Windows Application Client
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    1. USPhil Degenhardt
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    1. COThat's great but how would you use this without the typical console.writeline? and instead update a progress bar?
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    2. COWell in WinForms you could simply have your form implement IService1Callback and update your progress bar in implementation of Progress(...).
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    3. COYou might want to check this out: http://www.dotnetdude.com/CategoryView,category,WCF.aspx
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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