Aspose.Pdf表单元格不会跨越页面

如何解决Aspose.Pdf表单元格不会跨越页面

我正在Aspose.Pdf表中创建一些行和单元格，如下所示：

' add upper left cell
row.Cells.Add("11/03/2020")

' add right cell,spanning two rows since it is going to wrap
Dim summaryCell As Cell = row.Cells.Add(
    "Now is the time for all good men to come to the aid of their party." & vbCrLf &
    "This is the song that doesn't end; yes it goes on and on my friend! Some people started singing it not knowing what it was,and they'll continue singing it forever just because..." & vbCrLf &
    "Space... the final frontier... These are the voyages of the starship Enterprise... Its five year mission: to explore strange new worlds,to seek out new life and new civilizations,to boldly go where no man has gone before!" & vbCrLf &
    "When in the course of human events it becomes necessary..." & vbCrLf &
    "We the people of the United States of America,in order to form a more perfect union..." & vbCrLf &
    "Four score and seven years ago,our fathers set forth in this nation the proposition that all men are created equal." & vbCrLf &
    "In the beginning,when God created the heavens and the earth,and the earth was without form and void..." & vbCrLf &
    "Lorem ipsum sit dolor amet..." & vbCrLf &
    "In the year AD 2101,war was beginning... We get signal! What! Main screen turn on! HOW ARE YOU GENTLEMEN?! ALL YOUR BASE ARE BELONG TO US..." & vbCrLf)
summaryCell.RowSpan = 2

' go to the next row
row = table.Rows.Add()

' add lower left cell
Dim cellVisitType As Cell = row.Cells.Add("Happy election day!")

' go to the next row
row = table.Rows.Add()

当然，将占位符文本替换为实际数据。现在，我在一个循环中运行此命令，以生成多行两行的集合-每一组在左边有两个包含日期和访问类型的单元格，在右边两行包含一个单元格的单个单元格包含大量文本。我的问题是，当这些部分之一跨越页面边界（不是明确的分页符，只是布局引擎在一页上没有空间了）时，下一部分的日期和访问类型就会“拉起”到页面顶部页面，而不是出现在相应部分的开头旁边：

在上面生成的PDF的屏幕截图中，请查看日期和访问类型（以红色箭头突出显示）如何位于页面的顶部，而不是我在窗口开头附近绘制的红色矩形中详细的文字？为什么会这样呢？我该如何解决？