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

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

        Protected Sub BtnCreatePdf_Click(sender As Object, e As EventArgs)
            ' read parameters from the webpage
            Dim url As String = TxtUrl.Text

            Dim userPassword As String = TxtUserPassword.Text.Trim()
            Dim ownerPassword As String = TxtOwnerPassword.Text.Trim()

            Dim canAssembleDocument As Boolean = ChkCanAssembleDocument.Checked
            Dim canCopyContent As Boolean = ChkCanCopyContent.Checked
            Dim canEditAnnotations As Boolean = ChkCanEditAnnotations.Checked
            Dim canEditContent As Boolean = ChkCanEditContent.Checked
            Dim canFillFormFields As Boolean = ChkCanFillFormFields.Checked
            Dim canPrint As Boolean = ChkCanPrint.Checked

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

            ' set document passwords
            If Not String.IsNullOrEmpty(userPassword) Then
                converter.Options.SecurityOptions.UserPassword = userPassword
            End If
            If Not String.IsNullOrEmpty(ownerPassword) Then
                converter.Options.SecurityOptions.OwnerPassword = ownerPassword
            End If

            'set document permissions
            converter.Options.SecurityOptions.CanAssembleDocument = canAssembleDocument
            converter.Options.SecurityOptions.CanCopyContent = canCopyContent
            converter.Options.SecurityOptions.CanEditAnnotations = canEditAnnotations
            converter.Options.SecurityOptions.CanEditContent = canEditContent
            converter.Options.SecurityOptions.CanFillFormFields = canFillFormFields
            converter.Options.SecurityOptions.CanPrint = canPrint

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

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

            ' close pdf document
        End Sub
    End Class
End Namespace