Controller for consuming WebsiteToImage

gistfile1.txt

using System;
using System.Drawing.Imaging;
using System.IO;
using System.Text.RegularExpressions;
using System.Web.Mvc;
using ScreenGrab.Core.Helpers;

namespace ScreenGrab.UI.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Image(string url, int? width = 1800, int? height = null)
        {
            if (string.IsNullOrWhiteSpace(url))
            {
                throw new ArgumentException("url");
            }

            var regex = new Regex("[^a-zA-Z0-9 -]");
            var sluggedUrl = regex.Replace(url, "");
            var datetime = DateTime.Now.ToString("ddMMyyyyHHmmss");
            var filename = $"{datetime}-{sluggedUrl}.png";

            // [ML] - Temporary save path just in case we switch to saving images to serve them up

            var stream = ConvertHtmlToImage(url, width  ?? 1800, height ?? 1400, !height.HasValue);

            return File(stream, "image/png", filename);
        }

        private Stream ConvertHtmlToImage(string url, int width = 1800, int height = 1400, bool useBodyHeight = false)
        {
            if (!string.IsNullOrWhiteSpace(url))
            {
                using (var screengrab = new WebsiteToImage(url, width, height, useBodyHeight))
                {
                    var bitmap = screengrab.Generate();

                    var stream = new MemoryStream();
                    bitmap.Save(stream, ImageFormat.Png);

                    stream.Position = 0;

                    return stream;
                }
            }

            throw new ArgumentException("url");
        }
    }
}