>>I have this code:
>>
>>

                mmAppWPF.WindowManager.Show(new OutboundInvoiceReportViewer(invoicePKs), this);
>>
>>                MessageBoxResult result = mmAppWPF.MessageBox.Show("Did all Invoices print successfully?",
>>                                       "Invoice Print",
>>                                       MessageBoxButton.YesNo,
>>                                       MessageBoxImage.Question);

>>
>>Which displays the messagebox before the report has been displayed fully (just the outline of the form with the report viewer in it gets displayed).
>>
>>This looks exactly like this code:
>>
>>

                mmAppWPF.WindowManager.ShowDialog(new InvoiceWithDetailReportViewer(manifestNumbers), this);
>>
>>                MessageBoxResult result = mmAppWPF.MessageBox.Show("Did all Invoices print successfully?",
>>                   "Invoice Print",
>>                   MessageBoxButton.YesNo,
>>                   MessageBoxImage.Question);

>>
>>which displays the form with the report viewer properly, then when I close the form the messagebox gets displayed. This is how I want it to work. Does anyone have any idea why the first set of code might work differently?
>
>I see one difference:
>Try to change
>

> mmAppWPF.WindowManager.Show(new OutboundInvoiceReportViewer(invoicePKs), this);
>// to
> mmAppWPF.WindowManager.ShowDialog(new OutboundInvoiceReportViewer(invoicePKs), this);
>

Well spotted Boris!

thanks