private void OnProcessListViewColumnClick(object sender, ColumnClickEventArgs e)
{
// Determine if clicked column is already the column that is being sorted.
if (e.Column == _columnSorter.SortColumn)
{
// Reverse the current sort direction for this column.
_columnSorter.Order = _columnSorter.Order == SortOrder.Ascending ? SortOrder.Descending : SortOrder.Ascending;
}
else
{
// Set the column number that is to be sorted; default to ascending.
_columnSorter.SortColumn = e.Column;
_columnSorter.Order = SortOrder.Ascending;
}
// Perform the sort with these new sort options.
processListView.Sort();
}