By default, group header name is displayed only based on the grouped column header name. In order to display group Header name based on the other column, you need to customize the GridCaptionSummaryCellRenderer and override the OnInitializeEditElement and OnUpdateEditBinding methods.
Refer the below code example in which CustomCaptionSummaryCellRenderer class extended from GridCaptionSummaryCellRenderer and the column text based on other columns is obtained by passing the other column’s mapping name to the GetCustomizedCaptionText parameters to achieve the desired outcome.
Grouped the EmployeeID column based on the EmployeeName is displayed in the view.
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