Discussion about the Way to Convert Word to PDF with VB.NET

We can find that most splendid papers are showed online with PDF format. In order to avoid papers to editing by others and protect the copyright, authors may require that the papers are displayed as PDF format before sending it to internet. If the author uses Microsoft Word to write papers originally, he or she needs to convert Word to PDF. So, I want to discuss something about the conversion between Word and PDF.
For common users, they can use converters to convert Word to PDF. At present, more and more converters provided online. Even, some are free to download. Because of these converters, it becomes more convenient to convert Word to PDF. However, we need to wait a little long time for convert a large amount of documents.
For developers, they often use C# or VB.Net to realize conversion. Also, we can find many materials about the methods. But we need to choose the most appropriate method according to the different requirements.
Because we should convert Word to PDF, so it seems that Word is the essential tool when converting. However, if we can’t install Microsoft Word on the system, is it possible to convert Word to PDF with VB.NET? Of course yes. The following code will show you the method to convert Word to PDF without Word being installed.
'Create word document
Dim document As New Document()

Dim section As Section = document.AddSection()
section.PageSetup.PageSize = PageSize.A4
section.PageSetup.Margins.Top = 72.0F
section.PageSetup.Margins.Bottom = 72.0F
section.PageSetup.Margins.Left = 89.85F
section.PageSetup.Margins.Right = 89.85F

Dim paragraph As Paragraph = section.AddParagraph()
paragraph.Format.HorizontalAlignment Spire.Doc.Documents.HorizontalAlignment.Left
paragraph.AppendPicture(Image.FromFile("Word.png"))

Dim p1 As String _
= "Microsoft Word is a word processor designed by Microsoft."_
+ "It was first released in 1983 under the name Multi-Tool Word for Xenix systems.
+ "Subsequent versions were later written for several other platforms including"_
+ "IBM PCs running DOS (1983), the Apple Macintosh (1984), the AT&T Unix PC (1985),"_
+ "Atari ST (1986), SCO UNIX, OS/2, and Microsoft Windows (1989)."

Dim p2 As String _
= "Microsoft Office Word instead of merely Microsoft Word."_
+ "The 2010 version appears to be branded as Microsoft Word,"_
+ "once again. The current versions are Microsoft Word 2010 for Windows and 2008 for Mac."

section.AddParagraph().AppendText(p1).CharacterFormat.FontSize = 14
section.AddParagraph().AppendText(p2).CharacterFormat.FontSize = 14

'Save doc file to pdf.
document.SaveToFile("Sample.pdf", FileFormat.PDF)