C# Code Snippet
===============

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_QuickStart();

// Load the document from disk.
Document doc = new Document(dataDir + "Template.doc");

dataDir = dataDir + "Template_out_.pdf";

// Save the document in PDF format.
doc.Save(dataDir);


VB.NET Code Snippet
===================

' For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET
' The path to the documents directory.
Dim dataDir As String = RunExamples.GetDataDir_QuickStart()

' Load the document from disk.
Dim doc As New Document(dataDir & "Template.doc")

dataDir = dataDir & "Template_out_.pdf"
' Save the document in PDF format.
doc.Save(dataDir)

http://goo.gl/OW5rWs

The code sample below converts a whole document from DOC to PDF using default options.

Word Documents to PDF (DOC to PDF) Conversion in .NET

C#