PDF Creator - ASP.NET Core

HomeController.cs

public class HomeController : Controller
{ 
	public IActionResult Index()
	{
		return View();
	} 

	[HttpPost]
	public FileResult Index(string editor1)
	{ 
		// create a unique file name
		string fileName = Guid.NewGuid() + ".pdf";

		// convert HTML text to stream
		byte[] byteArray = Encoding.UTF8.GetBytes(editor1);

		// generate PDF from the HTML
		MemoryStream stream = new MemoryStream(byteArray);
		HtmlLoadOptions options = new HtmlLoadOptions();
		Document pdfDocument = new Document(stream, options);

		// create memory stream for the PDF file
		Stream outputStream = new MemoryStream();
		pdfDocument.Save(outputStream);

		// return generated PDF file
		return File(outputStream, System.Net.Mime.MediaTypeNames.Application.Pdf, fileName);
	} 

	[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
	public IActionResult Error()
	{
		return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
	}
}

index.cshtml

@{
    ViewData["Title"] = "PDF Creator";
}
<script src="~/ckeditor/ckeditor.js"></script>
<div class="row">
    <div class="col-md-12">
        <h2>Create a PDF File</h2>
        <form method="post">
            <textarea name="editor1" id="editor1" rows="80" cols="80">
                Start creating your PDF document.
            </textarea>
            <br />
            <input type="submit" class="btn btn-success" value="Generate PDF" />
            <script>
                // Replace the <textarea id="editor1"> with a CKEditor
                // instance, using default configuration.
                CKEDITOR.replace('editor1');
            </script>
        </form>
    </div>
</div>