Question Treeview (Not how to build it)

[Rossmc]

I have created a parent-child-grandparent treeview with checkboxes.

When I check/uncheck the parent node I want all the child and grandchildren nodes to check/uncheck.

I did this in the treeview_AfterCheck event:

for each nod as treenode in e.node.nodes
nod.checked = e.node.checked
next

At first this seemed to work perfectly but if I rapidly check/uncheck the parent node in the UI the parent and children nodes go out of sync! It possibly has something to do with the fact that the _AfterCheck event is called everytime I programatically check each child node?

What gives? Surely there is a way to handle this correctly?

Thanks in advance...

 

[JohnH]

rapid clicking = doubleclicking. TreeView has some known issues regarding checkboxes and doubleclicking, https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=374516
I have tested around 50 different combinations of events to catch this issue, but still haven't found any way to detect this reliably.

It possibly has something to do with the fact that the _AfterCheck event is called everytime I programatically check each child node?

This is a fact that you should also guard against by checking that e.Action <> TreeViewAction.Unknown, but it won't help the doubleclick problem.