private void initWrapping()
{
if (!_shouldWrapTablesInColumns) return;
if (_pageSetup.PagePreferences.RunDirection == null)
_pageSetup.PagePreferences.RunDirection = PdfRunDirection.LeftToRight;
_mainGroupTable = new PdfGrid(1) { SplitLate = false, WidthPercentage = 100, RunDirection = (int)_pageSetup.PagePreferences.RunDirection };
}