Migrating an HTML to PDF integration from Classic to Next

using EvoPdf;

var converter = new HtmlToPdfConverter();
converter.LicenseKey = "…";
converter.ConversionDelay = 2;
byte[] pdf = converter.ConvertUrl(url);

using EvoPdf.Next;

Licensing.LicenseKey = "…";   // once per process
var converter = new HtmlToPdfConverter();
converter.ConversionDelay = 2;
byte[] pdf = converter.ConvertUrl(url);

converter.PdfDocumentOptions.ShowHeader = true;
converter.PdfHeaderOptions.HeaderHeight = 60;
converter.PdfHeaderOptions.HeaderBackColor = Color.White;

HtmlToPdfElement headerHtml = new HtmlToPdfElement(headerUrl);
headerHtml.FitHeight = true;
converter.PdfHeaderOptions.AddElement(headerHtml);

// line under the header
LineElement line = new LineElement(0, 59, headerWidth, 59);
line.ForeColor = Color.Gray;
converter.PdfHeaderOptions.AddElement(line);

// page numbers: a TextElement with &p; and &P; placeholders
converter.PdfFooterOptions.AddElement(
    new TextElement(0, 20, "Page &p; of &P;", font));

// hide on the first page, from an event handler
converter.PrepareRenderPdfPageEvent += (p) =>
    { if (p.PageNumber == 1) p.Page.ShowHeader = false; };

var header = converter.PdfDocumentOptions.PdfHtmlHeader;

header.HtmlSourceUrl = headerUrl;        // or header.Html + HtmlBaseUrl
header.Height = 60;                      // or AutoSizeContentHeight = true
header.FitHeight = true;
header.AutoResizePdfMargins = true;   // make room in the top margin

// line under the header: CSS in the header HTML

// page numbers: variables in the footer HTML
converter.PdfDocumentOptions.PdfHtmlFooter.Html =
    "<div style=\"text-align:center\">Page {page_number} of {total_pages}</div>";

// per-page visibility: no event handler
header.ShowInFirstPage = false;
header.ShowInOddPages = true;
header.ShowInEvenPages = true;
header.ReserveSpaceAlways = true;   // keep the space on hidden pages