/// <summary>
 /// Close sheets
 /// </summary>
 private void closeAllSubSheets()
 {
     for (int i = 0; i < this.lvWasteTransferActivity.Items.Count; i++)
     {
         ucTsWasteTransfersSheet control = (ucTsWasteTransfersSheet)this.lvWasteTransferActivity.Items[i].FindControl("ucTsWasteTransfersSheet");
         if (control != null)
         {
             control.Visible = false;
         }
     }
 }
    private void toggleTimeseries(ListViewCommandEventArgs e, int rowindex)
    {
        ucTsWasteTransfersSheet control = (ucTsWasteTransfersSheet)this.lvWasteTransferActivity.Items[rowindex].FindControl("ucTsWasteTransfersSheet");

        closeAllSubSheets(); // only allow 1 sheet open

        control.Visible = !control.Visible;
        Control div = this.lvWasteTransferActivity.Items[rowindex].FindControl("subsheet");

        div.Visible = !div.Visible;

        if (control.Visible)
        {
            // create search filter and change activity filter
            WasteTransferTimeSeriesFilter filter = FilterConverter.ConvertToWasteTransferTimeSeriesFilter(SearchFilter);
            filter.ActivityFilter = getActivityFilter(e);
            control.Populate(filter, SearchFilter.YearFilter.Year);
        }
    }