SelectPdf for .NET - Automatic Bookmarks with Html to Pdf Converter - VB.NET / ASP.NET Sample

This sample shows how the html to pdf converter can automatically generate pdf bookmarks based on some elements selection using SelectPdf Pdf Library for .NET.

The elements that will be bookmarked are defined using CSS selectors. For example, the selector for all the H1 elements is "H1", the selector for all the elements with the CSS class name 'myclass' is "*.myclass" and the selector for the elements with the id 'myid' is "*#myid". Read more about CSS selectors here.

Test document


Bookmark the following elements:

Sample Code Vb.Net

Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports SelectPdf

Namespace SelectPdf.Samples
    Public Class automatic_bookmarks
        Inherits System.Web.UI.Page

        Protected Sub Page_Load(sender As Object, e As EventArgs)
            If Not IsPostBack Then
                Dim url As String = Page.ResolveUrl("~/files/document.html")
                TxtUrl.Text = (New Uri(Request.Url, url)).AbsoluteUri
                LnkTest.NavigateUrl = url
            End If
        End Sub

        Protected Sub BtnCreatePdf_Click(sender As Object, e As EventArgs)
            ' instantiate a html to pdf converter object
            Dim converter As New HtmlToPdf()

            ' set the css selectors for the automatic bookmarks
            converter.Options.PdfBookmarkOptions.CssSelectors = _
                TxtElements.Text.Split(New Char() {","c})

            ' display the bookmarks when the document is opened in a viewer
            converter.Options.ViewerPreferences.PageMode = PdfViewerPageMode.UseOutlines

            ' create a new pdf document converting an url
            Dim doc As PdfDocument = converter.ConvertUrl(TxtUrl.Text)

            ' save pdf document
            doc.Save(Response, False, "Sample.pdf")

            ' close pdf document
        End Sub
    End Class
End Namespace