How to scroll at the last item in the listbox through an event

[GG]

I know I can scroll to the last item in the listbox by calling
SetSelected all the time
What I need is when I add items through the Items.Add or Items.AddRange
to be called automatically and go the the bottom.
Anybody knows how to be implemented?

Thanks

 

[Guest]

Derive from ListBox. Override the add and addrange to work the way you want.

 

[Guest]

Well, there isn't an ItemsAdded event on the listbox, but you could build
one if you wanted.

This is just a thought, but does adding an item trigger a resize? If so,
then you could add the logic to select the last item at the resize event.

-James

 

[GG]

Thanks

 

[GG]

Added the code to SizeChanged and works like a charm
if (lstMsgs.Items.Count==0)
return;
//This selects and highlights the last line
this.lstMsgs.SetSelected(lstMsgs.Items.Count - 1, true);
//This unhighlights the last line
this.lstMsgs.SetSelected(lstMsgs.Items.Count - 1, false);

This is the code in case somebody needs it


Thanks

 

[GG]

Will take it back. It does not work.

I ended up having a separate proc like this
private void lstMsgsItemsAddScrollBottom(object item)
{
this.lstMsgs.Items.Add(item);
//This selects and highlights the last line
this.lstMsgs.SetSelected(lstMsgs.Items.Count - 1, true);
//This unhighlights the last line
this.lstMsgs.SetSelected(lstMsgs.Items.Count - 1, false);
}
and call this one instead of items.add