title: Using Acrobat Plugin to print multiple PDF's (axAcroPDF1)
body: <p>I've got a windows app where I want to send to printer a list of PDF's in a listbox.
  Stepping through the code below, I can see that *axAcroPDF1.LoadFile(s) is loading each file in my application, but Acrobat only seems to print the last item in the  lbPDFList listbox to the printer (eg. if there is 4 PDF's to print, it will always only print the last PDF)?</p>
  
  <pre><code> int iListCounter = lbPDFList.Items.Count;
                  for (int i=0; i &lt; iListCounter; i++)
                  {
                      String s = null;
                      lbPDFList.SetSelected(i,true);
                      s = lbPDFList.SelectedItem.ToString();
                      axAcroPDF1.LoadFile(s);
                      axAcroPDF1.Show();
                      axAcroPDF1.printAllFit(true);
                  }
  </code></pre>
  
  <p>Is this a threading issue?  </p>