Hi, I can't seem to find a way to catch when the user click the column header. I'm trying to update all the checkboxes whithin the grid when the user hit the header.
You can detect when the user clicks a column header by subscribing to the CellClick event. Keep in mind though, that the default behavior of clicking a column header is to sort the grid based on that column. Therefor you should probably make sure to disable sorting on that particular column.