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    <p>MSMQ is a Windows platform specific technology to guarantee the delivery of messages to a specific destination. WCF has 2 bindings which can read/write directly to/from MSMQ, without the need for specific code - just configuration.</p> <p>WCF offers 2 binding strategies:</p> <ul> <li>NetMsmqBinding - a push/pull directly to/from MSMQ</li> <li>MsmqIntegrationBinding - a push/pull directly from a COM/COM+ component</li> </ul> <p>To use MSMQ and WCF together is actually very straight forward. From inserting into MSMQ, you do not even need a concrete implementation on the WCF. A simple example would be:</p> <pre class="lang-cs prettyprint-override"><code>namespace WcfServices { // Interface is only required for MSMQ [ServiceContract] public interface ISendTextService { [OperationContract(IsOneWay=true)] public void Write(string text); } } </code></pre> <p>To hook this up to a configuration file you would do:</p> <pre class="lang-xml prettyprint-override"><code>&lt;configuration&gt; &lt;system.serivceModel&gt; &lt;bindings&gt; &lt;netMsmqBinding&gt; &lt;!-- exactlyOnce="false" allows you send multiple MSMQ messages from the channel instance --&gt; &lt;binding exactlyOnce="false"&gt; &lt;!-- Remove security requirements for testing --&gt; &lt;security mode="None"/&gt; &lt;/binding&gt; &lt;/bindings&gt; &lt;client&gt; &lt;!-- Address format requires net.msmq prefix and no $ sign --&gt; &lt;!-- The MSMQ 'test' must also already exist for this to work --&gt; &lt;endpoint address="net.msmq://localhost/private/test" binding="netMsmqBinding" contract="WcfService.ISendTextService" /&gt; &lt;/client&gt; &lt;/system.serviceModel&gt; &lt;/configuration&gt; </code></pre> <p>This deals with the sending to MSMQ. A client app can then do something like:</p> <pre class="lang-cs prettyprint-override"><code>public class TestMsmq { static void Main(string[] args) { var factory = new ChannelFactory&lt;WcfService.ISendTextService&gt;(); var channel = factory.CreateChannel(); // This is required so that they can all be committed together using(var scope = new TransactionScope(TransactionScopeOption.Required)) { channel.SendText("Hello, world!"); channel.SendText("Hello, world! - Part 2"); channel.SendText("Hello, world! - Part 3"); scope.Complete(); } } } </code></pre>
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