problems with rowspan while generating a PDF using iText - itext

Question

Below is my sample application where I am getting an error on line
Add2CellRow(table, "Age", 1, "Gender", 2);
I think the rowspan value is creating the issue as the next line is not building.
Can someone help on the same?
The code is for Arabic Culture so need to set
Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SA");
Thread.CurrentThread.CurrentUICulture = new CultureInfo("ar-SA");
private static void Add3CellRow(PdfPTable table, string cell1Value, string cell2Value, int rowspan, string imgPath)
{
PdfPCell new1Cell = new PdfPCell(new Phrase(cell1Value, tableFont));
new1Cell.VerticalAlignment = Element.ALIGN_MIDDLE;
new1Cell.MinimumHeight = 25f;
new1Cell.Padding = 6f;
table.AddCell(new1Cell);
PdfPCell new2Cell = new PdfPCell(new Phrase(cell2Value, tableFont));
new2Cell.VerticalAlignment = Element.ALIGN_MIDDLE;
new2Cell.MinimumHeight = 25f;
new2Cell.Padding = 6f;
new2Cell.Colspan = 2;
table.AddCell(new2Cell);
PdfPCell new3Cell = null;
if (!String.IsNullOrWhiteSpace(imgPath))
{
Image img = Image.GetInstance(imgPath);
img.ScaleToFit(150, 150);
new3Cell = new PdfPCell(img);
}
else
{
new3Cell = new PdfPCell(new Phrase(String.Empty));
}
new3Cell.VerticalAlignment = Element.ALIGN_MIDDLE;
new3Cell.HorizontalAlignment = Element.ALIGN_CENTER;
new3Cell.MinimumHeight = 25f;
new3Cell.Rowspan = rowspan;
new3Cell.Colspan = 2;
new3Cell.Padding = 6f;
table.AddCell(new3Cell);
}
private static void Add2CellRow(PdfPTable table, string cell1Value, int colspanCell1, string cell2Value, int colspanCell2 = 2)
{
PdfPCell new1Cell = new PdfPCell(new Phrase(cell1Value, tableFont));
new1Cell.VerticalAlignment = Element.ALIGN_MIDDLE;
new1Cell.MinimumHeight = 25f;
new1Cell.Colspan = colspanCell1;
table.AddCell(new1Cell);
PdfPCell new2Cell = new PdfPCell(new Phrase(cell2Value, tableFont));
new2Cell.VerticalAlignment = Element.ALIGN_MIDDLE;
new2Cell.Colspan = colspanCell2;
new2Cell.MinimumHeight = 25f;
new2Cell.Padding = 6f;
table.AddCell(new2Cell);
}
public static MemoryStream Generate()
{
var doc = new Document(PageSize.A4, 10, 10, 90, 110);
MemoryStream memoryStream = new MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(doc, memoryStream);
doc.Open();
PdfPTable table = new PdfPTable(5);
table.RunDirection = PdfWriter.RUN_DIRECTION_RTL;
table.WidthPercentage = 89.5f;
table.DefaultCell.VerticalAlignment = Element.ALIGN_MIDDLE;
table.DefaultCell.Padding = 6f;
table.DefaultCell.UseAscender = true;
table.DefaultCell.UseDescender = true;
Add3CellRow(table,"Name","Harshit Verma",4,"");
Add2CellRow(table, "Age", 1, "Gender", 2);
Add2CellRow(table, "Age", 1, "Gender", 2);
Add2CellRow(table, "Age", 1, "Gender", 2);
table.SplitLate = false;
Paragraph p = new Paragraph("");
doc.Add(p);
table.SpacingBefore = 30f;
doc.Add(table);
writer.CloseStream = false;
doc.Close();
memoryStream.Position = 0;
return memoryStream;
}