public static void SetListViewHeaderArrow(ListView listView, int columnIndex, bool isAscending)
{
IntPtr header = (IntPtr)SendMessage(listView.Handle, 0x1000 + 31 /* LVM_GETHEADER */, 0, 0);
for (int i = 0; i < listView.Columns.Count; i++)
{
HDITEM hdi = new HDITEM();
hdi.mask = 0x0004 /* HDI_FORMAT */;
SendMessage(header, 0x1200 + 11 /* HDM_GETITEM */, (uint)i, ref hdi);
hdi.fmt &= ~(0x0200 /* HDF_SORTDOWN */ | 0x0400 /* HDF_SORTUP */);
if (i == columnIndex)
{
hdi.fmt |= isAscending ? 0x0400 /* HDF_SORTUP */ : 0x0200 /* HDF_SORTDOWN */;
}
SendMessage(header, 0x1200 + 12 /* HDM_SETITEM */, (uint)i, ref hdi);
}
SendMessage(listView.Handle, 0x1000 + 140 /* LVM_SETSELECTEDCOLUMN */, (uint)columnIndex, 0);
}
static extern int SendMessage(IntPtr hWnd, uint Msg, uint wParam, ref HDITEM lParam);
