internal void SortColumn(GridPanel panel, GridColumn column)
{
if (panel.IsSortable == true)
{
if (column.IsGroupColumn == true)
{
column.GroupDirection =
ToggleSortDirection(column.GroupDirection);
}
else if (column.ColumnSortMode != ColumnSortMode.None)
{
SortDirection sortDirection =
ToggleSortDirection(column.SortDirection);
if (column.ColumnSortMode == ColumnSortMode.Multiple &&
((Control.ModifierKeys & Keys.Shift) == Keys.Shift))
{
panel.AddSort(column, sortDirection);
}
else
{
if (panel.SortColumns.Count > 1)
sortDirection = SortDirection.Ascending;
panel.SetSort(column, sortDirection);
}
SuperGrid.DoSortChangedEvent(panel);
}
else
{
InvalidateHeader(panel, column);
}
}
else
{
InvalidateHeader(panel, column);
}
}