public override bool OnKeyDown(KeyboardKeyEventArgs e)
{
if (base.OnKeyDown(e))
{
return(true);
}
if (!IsFocused)
{
return(false);
}
ComboBoxBase parent = Parent as ComboBoxBase;
if (parent == null)
{
return(false);
}
bool handled = false;
switch (e.Key)
{
case Key.Up:
SeekIndex(SelectedIndex - 1);
return(true);
case Key.Down:
SeekIndex(SelectedIndex + 1);
return(true);
case Key.PageUp:
SeekIndex(SelectedIndex - (int)(Bounds.Height / parent.ItemHeight));
return(true);
case Key.PageDown:
SeekIndex(SelectedIndex + (int)(Bounds.Height / parent.ItemHeight));
return(true);
case Key.Home:
SeekIndex(0);
return(true);
case Key.End:
SeekIndex(parent.Count - 1);
return(true);
case Key.Enter:
if (SelectedIndex >= 0 && SelectedIndex < parent.Count)
{
OnItemSelected();
OnClose();
return(true);
}
break;
case Key.Escape:
OnClose();
return(true);
}
return(handled);
}