title: WPF Control Freeze after WindowsFormsHost trigger to view PDF
body: <p>I'm having problem with my User Control freeze. It's happen when I'm triggering the WindowsFormsHost to preview the PDF File. The pdf file still running in the WindowsFormsHost where i can still scroll to view it. However, my other controls(togglebutton,popupbox,etc) doesn't seems to work. </p>
  
  <p>Here is the XAML code for WindowsFormsHost in my UserControl</p>
  
  <pre><code>&lt;Grid Margin="0,0,203,0"&gt;
    &lt;WindowsFormsHost x:Name="ViewPDFWinForm" HorizontalAlignment="Left" Height="444" VerticalAlignment="Top" Width="708"/&gt;
  &lt;/Grid&gt;      
  </code></pre>
  
  <p>Here is the code to trigger the WindowsFormsHost to call PDF File from UserControl</p>
  
  <pre><code>PreviewReportPDF uc = new PreviewReportPDF(ReportGenerator.ReportPath);
  this.ViewPDFWinForm.Child = uc;
  </code></pre>
  
  <p>Here is how I pass the pdf file path</p>
  
  <pre><code>public PreviewReportPDF(string filepath)
      {
          InitializeComponent();
          this.axAcroPDF1.LoadFile(filepath);
          this.axAcroPDF1.setZoom(63);
      }
  </code></pre>