iTextSharp - 表函数中的错误？

Question

我尝试制作这样的表：

PdfPTable Table = new PdfPTable(6);

PdfPCell Cell = new PdfPCell(new Phrase("a", Font1));
Cell.Rowspan = 2;
Cell.Colspan = 2;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("b", Font1));
Cell.Rowspan = 2;
Cell.Colspan = 2;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("c", Font1));
Cell.Colspan = 2;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("d", Font1));
Cell.Colspan = 2;
Table.AddCell(Cell);

工作正常。但是改变列数会破坏表格。这是一个错误还是我做错了什么？

此代码会破坏表格：

PdfPTable Table = new PdfPTable(17);

PdfPCell Cell = new PdfPCell(new Phrase("a", Font1));
Cell.Rowspan = 2;
Cell.Colspan = 2;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("b", Font1));
Cell.Rowspan = 2;
Cell.Colspan = 10;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("c", Font1));
Cell.Colspan = 5;
Table.AddCell(Cell);

Cell = new PdfPCell(new Phrase("d", Font1));
Cell.Colspan = 5;
Table.AddCell(Cell);

编辑：表格应具有以下布局：

|-------------------------------------------------------|
| Cell "a" with | Cell "b" with | Cell "c", colspan = 5 |
| colspan = 2   | colspan = 10  |-----------------------|
| rowspan = 2   | rowspan = 2   | Cell "d", colspan = 5 |
|-------------------------------------------------------|

Answer 1

添加Table.CompleteRow();作为最后一行。