It should be instant.

I tried to recompile the source code with x86 instead of AnyCPU, but the performance is the same.

Is there anything I can re-template to speed it up?

Thanks a lot.

I did profile the sample with AQTime and almost all the time is within ArrangeOverride and OnPropertyChanged of panels and presenters.

When we add our custom styles to the xamDataGrid, it takes up to 7-8 seconds to expand a node... but all the CPU time is still used in ArrangeOverride and OnPropertyChanged of several objects.

Let me know if the AQTime report could be of any help.

Hi,

Anyone has update on this issue? We have similar performance issue and I found this post. When I ran it, it took less than 1 second which is similar performance to a grid we are developing now. But we all feel it is TOO slow. It should be instant. Still looking for a workaround.

Let me know if there's any update.

Thanks!

Yu

Want to share you with two discoveries that I made in case someone has more insight:

1. Yesterday the expansion was less than 1 second, that was with the default window size set in the application. If I maximize it to 1280x1024, then it does take almost 2 seconds; If I re-size it to 300x200, then it is almost INSTANT!  So the performance is related to the viewable area of the window, and probably the number of columns as well.

2. I added RecordExpanding and RecordExpanded tracking and found the time spent between is minimal; however, there is some delay before RecordExpanding is being called.

So I imagine a workaround like this: expand the group as if the viewable area is small and then programmatically re-size to previous size. Don't know how to do it and if it's possible.

Thanks,

Yu

That is good news that you are improving the performance of the grid

Because the performance of the xamdatagrid is very bad at the moment.

In my usage of the grid the standard wpf datagrid takes less than a second to refresh with a new set of data ( 30 rows, 9 columns 4 columns with combo boxes)

and the xamdatagrid takes 5-6 seconds to do the same refresh with the same data and setup. Excluding the custom colouring of cells that occurs on the wpf grid. 5-6 seconds is almost unusable.

I look forward to the new release with speed improvements

Regards

Murray

HI,

 I will bring this issue to the attention of our developers
 Sincerely,

 Matt
 Developer Support Engineer

I don't see any difference too...

Hi Matt,

I tried the 2010.3 today and updated the sample application to use the new version. However, the expansion performance is still the same, I couldn't tell the difference between this and running it with 2010.2. Please raise the issue to development team and we still need further help on this issue... .

Thanks,
Yu