Make Caption Summary Row editable and saving value

Can you provide an example of making the Caption Summary Rows editable. I was reading about providing a custom grouping engine and overriding some methods (IGridTableCellStyleChanged, RaiseTableCellStyleChanged) and also implementing a datasource to store the edited values, but I am very lost in putting this together. A sample project would go a long way in helping me!

Thanks

Steve

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