If i replace width * by width Auto on my DataGrid, the horizontal scroll is correctly displayed and works well but my latest column doesn't go to the end of the screen anymore (i need * and not Auto).

Ok, another DataGridView issue: I have the AutoSizeMode for every column in my DataGridView set to AllCells. I also have the AutoSizeColumnsMode for the DataGridView itself set to AllCells.

Run the sample, then open the column width popup from any data grid column header and click the "+" or "-" butttons. For me, nothing happens (the column width does not change). Note that changing the ...