.NET gridview not showing header is no data

I've been fighting with empty girdviews not showing the header for a while and this is the solution I came up with:

        public static void gridViewShowHeader(GridView gridView)
        {
            // Show header row (if none)
            Table table = new Table();
            if (gridView.Controls.Count != 0) table = (Table)gridView.Controls[0];
            if (table.Rows.Count != 0 && ((GridViewRow)table.Rows[0]).RowType
                == DataControlRowType.Header) return;
            GridViewRow headerRow = new GridViewRow(-1, -1,
                DataControlRowType.Header, DataControlRowState.Normal);
            for (int i = 0; i < gridView.Columns.Count; i++)
            {
                TableHeaderCell headerCell = new TableHeaderCell();
                headerCell.Text = gridView.Columns[i].HeaderText;
                headerRow.Controls.Add(headerCell);
            }
            table.Rows.AddAt(0, headerRow);
            gridView.Controls.Add(table);
        }

I have another routine that adds dropdown lists as column filters.
So this routine doesn't just test for an empty gridview, it tests
for a gridview without a header. So this can be run before or after
my gridViewShowFilters routine without a problem.