Hello, Shanti, RadGridView
offers the GroupSummaryEvaluate
event where you have access to the calculated value according to the values that are stored in the respective cells. If you want to format what exactly is displayed in the summary text, this is the appropriate place to do it: https://docs.telerik.com/devtools/winforms/controls/gridview/rows/summary-rows#customizing-the-summary-row
In case you want to change the default logic for calculating the summary value, you can extend the GridViewSummaryItem. A sample approach is demonstrated in this section: https://docs.telerik.com/devtools/winforms/controls/gridview/rows/summary-rows#extending-the-gridviewsummaryitem
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Dess | Tech Support Engineer, Sr.
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