Convert from HTML to PDF in CSharp VB and ASP.NET with a Free 3rd Party Library

Converting from html to pdf is not an easy task. There are some tools that can do that, but most of them cost thousands of dollars. SelectPdf offers a Community Edition (FREE) of the powerful Html To Pdf Converter for .NET that can be found in the full featured pdf library.

 
 
 
 
 
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5/10/2019
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C#
VB.NET
Imports System.Collections.Generic
Imports System.Linq
Imports System.IO
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports SelectPdf

Namespace SelectPdf.Samples
    Partial Public Class convert_current_page_to_pdf
        Inherits System.Web.UI.Page

        Private startConversion As Boolean = False

        Protected Sub BtnCreatePdf_Click(sender As Object, e As EventArgs)
            startConversion = True
        End Sub

        Protected Overrides Sub Render(writer As HtmlTextWriter)
            If startConversion Then
                ' get html of the page
                Dim myWriter As TextWriter = New StringWriter()
                Dim htmlWriter As New HtmlTextWriter(myWriter)
                MyBase.Render(htmlWriter)

                ' instantiate a html to pdf converter object
                Dim converter As New HtmlToPdf()

                ' create a new pdf document converting the html string of the page
                Dim doc As PdfDocument = converter.ConvertHtmlString(myWriter.ToString(), _
                                                                     Request.Url.AbsoluteUri)

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

                ' close pdf document
                doc.Close()
            Else
                ' render web page in browser
                MyBase.Render(writer)
            End If
        End Sub
    End Class
End Namespace