title: SubreportProcessing Event not Firing
body: <p>I'm using rdlc reports in WPF, so have done so using WindowsFormsHost wrapper.  The rdlc report I'm looking for run has a subreport embedded in it, and I'm setting the data source of that using the SubreportProcessing event of the ReportViewer.</p>
  
  <pre><code>Viewer.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(LoadAccessoriesSubReport);
  </code></pre>
  
  <p>My problem is that the SubreportProcessing event doesn't even get fired.  I'm defining it in the <code>Window_Loaded</code> event of the WPF window which contains the embedded ReportViewer Control, see xaml below :</p>
  
  <pre><code>       Title="ReportViewer" Height="1000" Loaded="Window_Loaded" Width="1000"&gt;
  &lt;Grid&gt;
      &lt;WindowsFormsHost Name="winHost"&gt;
          &lt;wf:ReportViewer  Dock="Fill" Name="rptViewer"&gt;
          &lt;/wf:ReportViewer&gt;  
      &lt;/WindowsFormsHost&gt;                   
  &lt;/Grid&gt;
  </code></pre>
  
  <p>Would appreciate any help on this.</p>