Hi Shachar,
To set style property for a particular row, you would either add a ConditionalFormat or handle QueryCellStyleInfo:
1) If you want to set style property for a row, then you can add a conditional format to the grid.TableDescriptor.ConditionaFormats collection. Please refer this sample: C:\Program Files\Syncfusion\Essential Studio\4.x\windows\Grid.Grouping.Windows\Samples\ConditionalFormatting
Here is a forum thread with another sample.
http://www.syncfusion.com/Support/Forums/message.aspx?MessageID=11621
2) You can use QueryCellStyleInfo event and provide the style setting on demand there. This is useful when you want to use a particular style setting for some arbitary row in the grouping grid. Please refer to the attached sample for implementation.
Sample :
GGC_RecordColor.zipBest regards,
Haneef