label control not updating during 'busy' activity

[g33man]

I've got a program which populates then sorts a Treeview control on my form (~90K nodes). It is a very busy recursion algorithm which takes up to 30 seconds to complete, during which time my Label control stops refreshing. The label control is updated every 500ms by a Timer, providing progress status to the user.
This seems to be a common issue, but I haven't found the right fix for my situation. I tried using a backgroundWorker to move the work off the UI thread, but since this work is updating the Treeview control on the main form, I get the error about trying to update a control started by a different thread. I've tried putting the classic Label.Refresh and Me.Refresh in my Timer_Tick sub, but no joy there also. Any suggestions is welcome.

 

[jebenson]

Try using Application.DoEvents immediately after updating the label.

I used to rock and roll every night and party every day. Then it was every other day. Now I'm lucky if I can find 30 minutes a week in which to get funky. - Homer Simpson

Arrrr, mateys! Ye needs ta be preparin' yerselves fer Talk Like a Pirate Day!

 

[jges]

https://social.technet.microsoft.co...thod-to-update-ui-from-secondary-threads.aspx