In Aspose.Pdf, why does giving a Text object a border actually give it two borders? How do I get rid of the inner border?

Question

Here is my style:

Dim sectionHeaderStyle As TextInfo = New TextInfo()
sectionHeaderStyle.FontName = "Arial"
sectionHeaderStyle.FontSize = 16
sectionHeaderStyle.Alignment = AlignmentType.Left
sectionHeaderStyle.IsTrueTypeFontBold = True
sectionHeaderStyle.IsTrueTypeFontItalic = False
sectionHeaderStyle.Color = New Aspose.Pdf.Color("Black")
' TODO: why are we getting a double border?
sectionHeaderStyle.TextBorder = New BorderInfo(15) ' 15 is binary 1111 so it means all four borders
sectionHeaderStyle.BackgroundColor = New Aspose.Pdf.Color("Silver")
sectionHeaderStyle.IsUnderline = False

And here is where I create a Text object using that style:

<Extension>
Public Function CreateBlankSection(ByVal pdf As Pdf, ByVal marginInfo As MarginInfo, ByVal sectionHeaderStyle As TextInfo, ByVal mainStyle As TextInfo, ByVal headerText As String) As Section
    ' Add a blank section into the PDF document
    Dim sec As Section = pdf.Sections.Add()
    sec.PageInfo.PageWidth = 8.5 * 72
    sec.PageInfo.PageHeight = 11 * 72
    sec.PageInfo.Margin = marginInfo
    sec.TextInfo = mainStyle

    ' Add the section title
    Dim text As Text = sec.CreateText(sectionHeaderStyle, headerText)

    ' Return the section created
    Return sec
End Function

<Extension>
Public Function CreateText(ByVal sec As Section, ByVal style As TextInfo, ByVal text As String) As Text
    Dim txt As Text = New Text(sec, text)
    txt.TextInfo = style
    sec.Paragraphs.Add(txt)
    Return txt
End Function

But when I render the section (in this screenshot I added some more tables and text besides the header), I get two borders?!

What's going on here? How can I get rid of the inner border? All I want is the outer border.

Answer 1

As suggested in the comment under your question, check the following sample code snippet which is DOM Based (Aspose.Pdf), and creates a table in the PDF document.

var doc = new Document();
var page = doc.Pages.Add();
page.PageInfo.Margin = new MarginInfo(10, 10, 10, 10);

Aspose.Pdf.Table pdfTable = new Table
{
 ColumnWidths = "200 100 150"
};

pdfTable.DefaultCellBorder = new BorderInfo(BorderSide.All, 1f);

page.Paragraphs.Add(pdfTable);

var headerRow = pdfTable.Rows.Add();
headerRow.DefaultCellTextState = new TextState() { FontSize = 20f, FontStyle = FontStyles.Bold };
headerRow.Cells.Add("Primary Parent Information");
headerRow.Cells[0].ColSpan = 3;

var secondRow = pdfTable.Rows.Add();
secondRow.Cells.Add("Primary Parent Name");
secondRow.Cells.Add("Date of Birth");
secondRow.Cells.Add("Current Age");

var thirdRow = pdfTable.Rows.Add();
thirdRow.Cells.Add("Clark Kentenburger");
thirdRow.Cells.Add("9/28/1978");
thirdRow.Cells.Add("42");

doc.Save("Table.pdf");

Below is the sample output generated by the above code snippet. You can notice that the text content is properly aligned along with its borders.