DataGridViewImageColumn ic= new DataGridViewImageColumn();
ic.HeaderText = "Img";
ic.Image = null;
ic.Name = "cImg";
ic.Width = 100;
DGV.Columns.Add(ic);
foreach (DataGridViewRow row in DGV.Rows)
{
DataGridViewImageCell cell = row.Cells[1] as DataGridViewImageCell;
cell.Value = (System.Drawing.Image)Properties.Resources.Icon_delete;
}