public async Task <Stream> PdfStreamAsync(PdfOptions options)
{
var paperWidth = 8.5m;
var paperHeight = 11m;
if (!string.IsNullOrEmpty(options.Format))
{
if (!_paperFormats.ContainsKey(options.Format.ToLower()))
{
throw new ArgumentException("Unknown paper format");
}
var format = _paperFormats[options.Format.ToLower()];
paperWidth = format.Width;
paperHeight = format.Height;
}
else
{
if (options.Width != null)
{
paperWidth = ConvertPrintParameterToInches(options.Width);
}
if (options.Height != null)
{
paperHeight = ConvertPrintParameterToInches(options.Height);
}
}
var marginTop = ConvertPrintParameterToInches(options.MarginOptions.Top);
var marginLeft = ConvertPrintParameterToInches(options.MarginOptions.Left);
var marginBottom = ConvertPrintParameterToInches(options.MarginOptions.Bottom);
var marginRight = ConvertPrintParameterToInches(options.MarginOptions.Right);
JObject result = await _client.SendAsync("Page.printToPDF", new
{
landscape = options.Landscape,
displayHeaderFooter = options.DisplayHeaderFooter,
headerTemplate = options.HeaderTemplate,
footerTemplate = options.FooterTemplate,
printBackground = options.PrintBackground,
scale = options.Scale,
paperWidth,
paperHeight,
marginTop,
marginBottom,
marginLeft,
marginRight,
pageRanges = options.PageRanges
});
var buffer = Convert.FromBase64String(result.GetValue("data").Value <string>());
return(new MemoryStream(buffer));
}
public async Task PdfAsync(string file, PdfOptions options)
{
var stream = await PdfStreamAsync(options);
using (var fs = new FileStream(file, FileMode.Create, FileAccess.Write))
{
byte[] bytesInStream = new byte[stream.Length];
stream.Read(bytesInStream, 0, bytesInStream.Length);
fs.Write(bytesInStream, 0, bytesInStream.Length);
}
}