title: Weird behaviour when I open a reportviewer in WPF
body: <p>When I open a report in my WPF project once, I get this message this message when I exit</p>
  
  <pre><code>{"Error while unloading appdomain. (Exception from HRESULT: 0x80131015)"}
  </code></pre>
  
  <p>Stack Trace :</p>
  
  <pre><code>at System.AppDomain.Unload(AppDomain domain)
  at Microsoft.ReportingServices.RefCountedAppDomain.Dispose()
  at Microsoft.Reporting.WinForms.LocalReport.ReportRuntimeSetupHandler.ReleaseSandboxAppDomain()
  
  
  at Microsoft.Reporting.WinForms.LocalReport.Dispose()
  at Microsoft.Reporting.WinForms.ReportInfo.Dispose()
  at Microsoft.Reporting.WinForms.ReportHierarchy.Clear()
  at Microsoft.Reporting.WinForms.ReportViewer.Dispose(Boolean disposing)
  at System.ComponentModel.Component.Finalize()
  </code></pre>
  
  <p>Is there something I do wrong ? I just open a form with a windowsFormHost and a ReportViewer inside. Do I need to close something else before closing my application ?</p>