Hello Clovis,

Thank you for posting in our community.

What I can suggest for achieving your requirement is handling editCellStaring event of the Updating feature. In this event the value of the cell that you would like to use as a min date could be retrieved and could be set to the minValue option of the DatePicker editor. For example:

  $(document).delegate("#grid", "iggridupdatingeditcellstarting", function (evt, ui) {
            var colKey = ui.columnKey;
            var rowID = ui.rowID;
           
            if (colKey == "EndDate") {
                var minValue = $("#grid").igGrid("getCellValue", rowID, "StartDate");
                var endDateEditor = $("#grid").igGridUpdating("editorForKey", "EndDate");
                $(endDateEditor).igEditor("option", "minValue", minValue);
            }
        });

I am also attaching a small sample illustrating my suggestion for your reference. In my sample I have two date time columns - Start Date and End Date. The dates entered in the end date should not be prior to the start date.

Please have a look at the attached sample and let me know whether this helps you achieve your requirement.