title: C# - Get value from a specific tag in XML document
body: <p>I have an xml document which looks like:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;cbn:PaidOrderNotification xmlns:cbn="http://xml.test.com/3.12.0.0/test.xsd"&gt;
      &lt;cbn:NotificationDate&gt;2016-08-01T07:28:46.679414Z&lt;/cbn:NotificationDate&gt;
      &lt;cbn:Purchase cbt:Id="95368158" xmlns:cbt="http://xml.test.com/3.12.0.0/testTypes.xsd"&gt;
          &lt;cbt:Status&gt;Test Order&lt;/cbt:Status&gt;
          &lt;cbt:Items&gt;
              &lt;cbt:Item cbt:RunningNo="1"&gt;
                  &lt;cbt:ProductId&gt;178732&lt;/cbt:ProductId&gt;
                  &lt;cbt:Payment cbt:SubscriptionId="S18767146"&gt;
                      &lt;cbt:CancelUrl&gt;https://store.test.com/&lt;/cbt:CancelUrl&gt;
                      &lt;cbt:ChangeUrl&gt;https://test.com/&lt;/cbt:ChangeUrl&gt;
                  &lt;/cbt:Payment&gt;
              &lt;/cbt:Item&gt;
          &lt;/cbt:Items&gt;
          &lt;cbt:ExtraParameters /&gt;
      &lt;/cbn:Purchase&gt;
  &lt;/cbn:PaidOrderNotification&gt;
  </code></pre>
  
  <p>Using C#, I want to get the value inside <code>&lt;cbt:CancelUrl&gt;</code> tag. How can I do that?</p>