[c#]
void ColumnSortOrderChangingHandler(object sender, Column column, SortOrder value, ref bool sorted)
{
  //sort nodes with custom IComparer implementor
  flyGrid.Rows.RootNode.Items.Sort(new MyCustomComparer(column, value));
  //custom sorting is succesfully finished - do not sort
  sorted = true;
}

            if (column is GridHierachyColumn)
            {
                PositionMonitorGrid2 grid = sender as PositionMonitorGrid2;
                grid.Rows.Items.Sort(new NodeComparer(column, value));
                
                sorted = true;
                int index = accountNodeCache[\"TOTAL\"].Index;
                this.Rows.Items[index].Index = 0;
                grid.Rows.RefreshNodes();
            }

if (column is GridHierachyColumn)
{
  PositionMonitorGrid2 grid = sender as PositionMonitorGrid2;
  grid.Rows.Items.Sort(new NodeComparer(column, value));
              
  sorted = true;  
  grid.Rows.RefreshNodes();
  int index = accountNodeCache[\"TOTAL\"].Index;
  this.Rows.Items[index].Index = 0;
}