C#

frmDoNext objfrmDoNext = new frmDoNext();
objfrmDoNext.MdiParent = this;
// or if this code is running from another child form,
// and it really shouldn't be from your description...
objfrmDoNext.MdiParent = this.MdiParent;
objfrmDoNext.Show();

// this would have to be declared somewhere<br />
// no idea what sort of EventHandler SelectionChanged <br />
// actually uses so we'll just use the default EventHandler<br />
visioApplication.SelectionChanged += new EventHandler(Application_SelectionChanged);<br />
<br />
private void Application_SelectionChanged(Office.Interop.Visio.Window window)<br />
{<br />
  NumOfShapes = window.Selection.Count;<br />
  MyShape = mywindow.Selection[1];<br />
  ReadANamedCustomProperty(MyShape, "HoursPerWeek");<br />
}

public string getFirstListing()<br />
{<br />
  // check if arrListings is empty<br />
  if (arrListings.Count == 0)<br />
  {<br />
    return null;<br />
  }<br />
<br />
  // get the first item in the list<br />
  Listings list = (Listings) arrListings[0];<br />
  return list.Name;<br />
<br />
  // or the short version<br />
  return ((Listings) arrListings[0]).Name;<br />
}