Documentation (original), Discussion and Issue tracking is on CodePlex.
var htmlTemplateFile = ".//03.Tables.htm";
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
var html = await File.OpenText(htmlTemplateFile).ReadToEndAsync();
var pdf = HtmlRendererCore.PdfSharp.PdfGenerator.GeneratePdf(html, PdfSharp.PageSize.A4);
var generatedPdfFile = ".//03Tables.pdf";
pdf.Save(generatedPdfFile);