my gantt chart is bound to a DataTable, but the context["DATA_ROW"] is always 0 no matter which gantt chart bar is pointed to. It seems that <DATA_ROW> is not available for gantt chart tooltip.
how do i retrieve the id of the data row in DataTable according to the chart bar the mouse is pointing to?
Thanks first.
because the data structure for gantt chart is not simply tabular, the DATA_ROW and DATA_COLUMN keys do not map well back to the source data table.
here's how the context can be used to find the current point:
DATA_ROW will be the index of the GanttSeries.
DATA_COLUMN will be the index of the GanttItem - this is a counter that accumulates for items across all series
TIME_ENTRY_INDEX will be the index of the time entry within the GanttItem.
Thanks, David.
Then I will turn to GanttDataSource instead.