I have a unique requirement. I need to implement a checkbox header which can select/de-select an entire 'checkbox-column' in the AdvancedDataGrid. This in itself is fine. But the problem is that I have a grouping collection and grouped rows. So if I check/uncheck the header checkbox, the collapsed(or grouped) rows checkboxes do not get updated. If I expand all items in this grid, then the select/de-deselect of the 'checkbox header' works. How do I get it to work with the collapsed-grouped rows ?
Also I read data from an array collection which has a 'checked' property. So initially the state of the checkboxes comes from the data.