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Question  posted by Seetharaman Srinivasan on Aug 11, 2008 04:58
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GroupBY

I designed an application using GroupBy method as an option to the user. This allowed the user to display the same data by different, groups. All of a sudden I saw today lot of blank rows on the top of the gird when I used Groupby method.

Is it because I changed the defintion of Grid or the data has some problems? Have you come across this situation. Now I removed the GroupBy option from my application. Any help is appreciated.
Answer posted by Support on Aug 11, 2008 06:31

It hard to say , without ability to reconstruct issue, but the possible reasons are

- non unique IDs ( they will cause unpredictable results during grouping ) 
- usage of grouping with such modes as paging and smart rendering ( modes are mutual exclusive )
- there are known issues with some third party libraries ( prototype for example ) which extend base js object and may corrupt grouping if cell value will be equal to the name of methods ( contact us dhtmlx.com if you need fix for that issue )

If it possible - please provide any kind of sample or demo link, where issue can be reconstructed.