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RadGridView extremely slow

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Martin Horst
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Martin Horst asked on 28 Apr 2010, 03:15 PM

Hi,

I do a little tests with RadGridView and I have to say that the RadGridView ist extremely slow, especially the scrolling. I first added a DataTable object as data source with 130 rows and 20 columns. The application was running full screen with 1920x1200 screen resolution. Scrolling is nearly impossible, the grid takes 2 or more seconds to update the position of the rows. After that I added a List<T> with 500 DateTime objects to see if the problem lies elsewhere, but without success. 

My computer is a Pentium Quad Code @ 2.8Ghz, 8GB ram, NVidia Quadro NVS. I know that the graphic adapter isn't the fastes in the world, but for scrolling a table it should be enough.

What can I do to improve the performance!? The problem is that our customers have way slower computers. So the RadGridView is not useable for me.

Thanks in advance

Martin Horst

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erwin
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answered on 29 Apr 2010, 09:04 AM
That's strange, I routinely have grids with thousands of rows and dozens of columns, no problems with performance on much slower hardware (my development machine is an almost 3 years old laptop) and I have SQL Server running on the same machine ...



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Martin Horst
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answered on 29 Apr 2010, 09:23 AM

Hi,

I think the problem is more the graphic adapter than the processor. I also figured out that disabling the grouping mechanism improves the performance slightly. But the grid is still much slower than the normal Windows Forms one. So I hope there is way to impove the performance, because I would like to use it.

Best regards

Martin Horst

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Jack
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answered on 29 Apr 2010, 10:42 AM
Hi Martin,

Thank you for contacting us.

Currently RadGridView is not optimized for larger number of columns (10+).  We know about this limitation and we plan to implement column virtualization in our upcoming Q2 release (more info). Nevertheless, please send me your application in a new support ticket and I will research if we can optimize something in your app. We will also consider your scenario when refactoring the scrolling mechanism. 

Should you have any other questions, don't hesitate to ask.

 

Kind regards,
Jack
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Martin Horst
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answered on 29 Apr 2010, 11:16 AM

Hi Jack, 

thanks for your answer. My application in the moment is only a little test application, so there is no need for you the try to improve the performance. Furthermore I read that the next version of the RadGridView will support ErrorText properties on grid cells. This is also an realy important feature for me, because I'm planning to replace the Windows Forms grid view with the Telerik one in an existing application. And there I realy need the new ErrorText cell property. So, I have to wait for the next version.

Best regards

Martin Horst

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Jack
Telerik team
answered on 30 Apr 2010, 09:34 AM
Hi Martin,

We are glad to hear that the new version will better help you. We plan to release a beta in about three weeks,  so feel free to download and play with it. We will appreciate your feedback.

 

Greetings,
Jack
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Brian Lanham
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answered on 15 Nov 2011, 12:11 AM
I haven't touched this project in a few months and decided to upgrade to Q2 2011.  Now the GridView performs terribly slowly.  I tried a vanilla project with the same results.  I uninstalled WinForms (seems I had 2 version, 2010 and 2011) and reinstalled 2011 but no change.  Also, this seems to be isolated to the GridView alone.  PageView and other controls seem to perform fine.  Any advice at all is appreciated.
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Jack
Telerik team
answered on 17 Nov 2011, 05:25 PM
Hi Brian Lanham,

Thank you for contacting us. Could you please send us your project so we can test it and locate the issue?We will be glad to help further. Please note that you have to open a new support ticket in order to be able to attach your files.

I am looking forward to your reply.
 
Greetings,
Jack
the Telerik team

Q2’11 SP1 of RadControls for WinForms is available for download (see what's new); also available is the Q3'11 Roadmap for Telerik Windows Forms controls.

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Brian Lanham
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answered on 22 Nov 2011, 03:56 PM
As info...I submitted a ticket.
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Martin Horst
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erwin
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Martin Horst
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Jack
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Brian Lanham
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