Remove objects like table row before rendering - vb.net

Question

I am generating a document with itext7 in vb.net. The document is a payment reminder. The document contains 1 to many positions (I do not know how many positions the document will have at the end). Sometimes it could happen, that a position contains no amount. And I want to remove this position.
The reminder positions looks for example like this:
CustomerName | Amount |
---------------|-------------|
Jupiter Jones | 1,100.12 |
Peter Crenshaw | 0.00 |
Bob Andrews | 231.02 |
---------------|-------------|
Sum | 1,331.14 |
The lines are added to the table with
table.AddCell(cell1)
table.AddCell(cell2)
This example is very simplified...sadly it is because of the data structure and the calculations that have to be made, that I do not know whether the position line has to be printed before starting the line (the first cell of the line) or not.
So is it possible to "remember" a kind of index or handle or anything else, so that I am able to remove certain objects from the itext7 document before I "send" it to the renderer?
The table should look like this after the "removement":
CustomerName | Amount |
---------------|-------------|
Jupiter Jones | 1,100.12 |
Bob Andrews | 231.02 |
---------------|-------------|
Sum | 1,331.14 |
I hope you understand, what I mean...
To clarify some facts and answer the questions blow:
I wrote a wrapper-class (dll) for itext7 to create different types of pdfs with it. A whole table-creation contains of
obj.TableBegin({Cell1Width, Cell2Width})
while objMySqlDataReader.Read
Dim calculatedAmount as Single = 0
//do some calculations
objCell1.Text = objMySqlDataReader("CustomerName")
objCell2.Text = calculatedAmount
obj.TableCreateRow({objCell1, objCell2})
End While
obj.TableEnd()
Method TableBegin
Private Sub TableBegin(ByVal ColWidths as Single())
table = new Table(ColWidths)
//some formattings and so on
End Sub
Method TableCreateRow
Private Sub TableCreateRow(byval arrCells as MyOwnCellType())
For Each varCell As MyOwnCellType In arrCells
Dim c As Cell = New Cell()
Dim p As Paragraph = New Paragraph(varCell.Text)
c.Add(p)
//followed by some formatting lines like c.SetBackgroudColor
//or c.SetBorder
table.AddCell(c)
Next
End Sub
Method TableEnd
Private Sub TableEnd()
document.Add(table)
End Sub
The moment when I know whether a row as to be printed or not is variable. Sometimes I know it just after "printing" both cells of the row. But it could happen that I want to remove a table-row after the table has been "finished".
In another "document-type" a have a very similar problem, but there I need to remove a whole page of the document including Paragraphs, Tables, Images....
My utopian idea was, that I "save" the handle of each "possible to be removed object" in a list or array and after recognizing wheter the objects have to be printed or not I can either clear this array or remove all objects within this array by something like document.remove(handle)
Another utopian idea was, that I "collect" all "possible to be removed / printed objects" in any kind of array or list and after recognizing whether printing or not I can "push" these objects to the document or discard them.
It is difficult to discribe and even much more difficult to understand why I do not know "printing or not" before printing. But believe me - I do not know earlier. ;-)
Any idea or help is very appreciated.