Nanook.QueenBee.EditorForm.mnuSearchFilter_Click C# (CSharp) Method

        private void mnuSearchFilter_Click(object sender, EventArgs e)
        {
            ListViewItem li;
            if (lstSearchResults.SelectedItems.Count != 0)
                li = lstSearchResults.SelectedItems[0];
            else
                return;

            try
            {
                lstSearchResults.BeginUpdate();

                if (sender == mnuFOnItem || sender == mnuFOutItem)
                    filterSearchResults(0, sender == mnuFOnItem, li.SubItems[0].Text);
                else if (sender == mnuFOnFilename || sender == mnuFOutFilename)
                    filterSearchResults(1, sender == mnuFOnFilename, li.SubItems[1].Text);
                else if (sender == mnuFOnDataType || sender == mnuFOutDataType)
                    filterSearchResults(3, sender == mnuFOnDataType, li.SubItems[3].Text);
            }
            finally
            {
                lstSearchResults.EndUpdate();
            }
        }