Protected Sub convertToPdfButton_Click(ByVal sender As Object, ByVal e As EventArgs)
    ' Create a HTML to PDF converter object with default settings
    Dim htmlToPdfConverter As New HtmlToPdfConverter()

    ' Set license key received after purchase to use the converter in licensed mode
    ' Leave it not set to use the converter in demo mode
    htmlToPdfConverter.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og="

    ' Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
    ' Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
    htmlToPdfConverter.ConversionDelay = 2

    ' Set the encryption algorithm and the encryption key size if they are not the default ones
    If (Not bit128RadioButton.Checked Or Not rc4RadioButton.Checked) Then
        ' set the encryption algorithm
        If (rc4RadioButton.Checked) Then
            htmlToPdfConverter.PdfSecurityOptions.EncryptionAlgorithm = EncryptionAlgorithm.RC4
        Else
            htmlToPdfConverter.PdfSecurityOptions.EncryptionAlgorithm = EncryptionAlgorithm.AES
        End If

        ' set the encryption key size
        If (bit40RadioButton.Checked) Then
            htmlToPdfConverter.PdfSecurityOptions.KeySize = EncryptionKeySize.EncryptKey40Bit
        ElseIf (bit128RadioButton.Checked) Then
            htmlToPdfConverter.PdfSecurityOptions.KeySize = EncryptionKeySize.EncryptKey128Bit
        ElseIf (bit256RadioButton.Checked) Then
            htmlToPdfConverter.PdfSecurityOptions.KeySize = EncryptionKeySize.EncryptKey256Bit
        End If
    End If

    ' Set user and owner passwords
    If userPasswordTextBox.Text.Length > 0 Then
        htmlToPdfConverter.PdfSecurityOptions.UserPassword = userPasswordTextBox.Text
    End If

    If ownerPasswordTextBox.Text.Length > 0 Then
        htmlToPdfConverter.PdfSecurityOptions.OwnerPassword = ownerPasswordTextBox.Text
    End If

    ' Set PDF document permissions
    htmlToPdfConverter.PdfSecurityOptions.CanPrint = printEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanPrintHighResolution = highResolutionPrintEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanCopyContent = copyContentEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanCopyAccessibilityContent = copyAccessibilityContentEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanEditContent = editContentEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanEditAnnotations = editAnnotationsEnabledCheckBox.Checked
    htmlToPdfConverter.PdfSecurityOptions.CanFillFormFields = fillFormFieldsEnabledCheckBox.Checked

    If ((PermissionsChanged(htmlToPdfConverter) Or htmlToPdfConverter.PdfSecurityOptions.UserPassword.Length > 0) And
        htmlToPdfConverter.PdfSecurityOptions.OwnerPassword.Length = 0) Then
        ' A user password is set but the owner password is not set or the permissions are not the default ones
        ' Set a default owner password
        htmlToPdfConverter.PdfSecurityOptions.OwnerPassword = "owner"
    End If

    ' Convert the HTML page to a PDF document in a memory buffer
    Dim outPdfBuffer() As Byte = htmlToPdfConverter.ConvertUrl(urlTextBox.Text)

    ' Send the PDF as response to browser

    ' Set response content type
    Response.AddHeader("Content-Type", "application/pdf")

    ' Instruct the browser to open the PDF file as an attachment or inline
    Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Set_Permissions_Password.pdf; size={0}", outPdfBuffer.Length.ToString()))

    ' Write the PDF document buffer to HTTP response
    Response.BinaryWrite(outPdfBuffer)

    ' End the HTTP response and stop the current page processing
    Response.End()
End Sub