I'm using the AdvancedDataGrid, with multiple levels of grouping, and am providing summary rows at the bottom of each group.
Unfortunately, I need to include an input field (text input) in one of the columns in each summary row. Does anybody know how to customized the summary row so that I can include an input field? I had hoped to write my own "extension" of the AdvancedDataGrid class, but have discovered that the sources are not available, so I guess I can't do that.
