Hello,

I recently tried to use a treeview with a large number of trees (>4000). Note that by default the tree comes up with all nodes expanded. In Firefox the application so slow that it was unusable. You could barely scroll the tree. In IE 8 (compatibility mode) performance was OK. This was with version 6.3.14.

I'm raising this issue so you can check how 6.4 behaves in this case. What you should check is:

1) that the tree by default comes up with the nodes collapsed if all you do is add a bunch of nodes to it without calling any of the expand/collapse methods (this is the default WinForms behavior if you do not explicitly tell it to expand all nodes)

2) that the performance in IE and Firefox is acceptable for trees with lots of nodes (I suggest you try with at least a few thousand nodes)

Regards,

Marios Skounakis

palli wrote As for the performance of huge trees, we aldready have an issue on that subject which you can track here.

The issue you mention refers to the performance of populating or updating the tree view. The performance issue I saw was after the tree was populated. In FF it was virtually impossible to scroll the tree or click on a node. FF was almost completely hang.