Deselected rows in grid

[Maarten]

I can't work out how to get the deselected rows in the change() event in the grid? I can see that the select() method gives the rows that are selected but I can't see how to get the row that was just deselected ?

[Vladimir Iliev]

Hi Carl,

 
Please note that there is no build-in method which returns the deselected rows in the Change event, however you can implement such functionality by saving currently selected rows on each Change event and on next Change event compare them with the newly selected rows. Please find the example below:

Change event handler:

var lastSelection = [];
function onChange(e) {
    if (!lastSelection.length) {
        lastSelection = e.sender.select();
    }
    else {
        var currentSelection = e.sender.select();
        var deselected = [];
        for (var i = 0; i < lastSelection.length; i++) {
            currentUID = $(lastSelection[i]).attr("data-uid");
            if (!currentSelection.filter("[data-uid='" + currentUID + "']").length) {
                deselected.push(lastSelection[i]);
            }
        }
        lastSelection = currentSelection;
        //Execute your custom logic over the deselected rows
        console.log(deselected);
    }
}

Kind Regards,
Vladimir Iliev
the Telerik team