Rotativa Download with SaveAs dialog - asp.net-mvc

Question

I am using Rotativa tool to display pdf. It works fine with the following code:
public ActionResult PreviewDocument()
{
var htmlContent = Session["html"].ToString();
var model = new PdfInfo { Content = htmlContent, Name = "PDF Doc" };
return new ViewAsPdf(model);
}
I wanted to know the way to download the pdf via browser's "save as" dialog on clicking on a button and not to display in some iframe. "new ViewAsPdf(model)" just returns the pdf data.
Thanks in advance.

Answer 1

You can add additional attributes to the Rotativa call like this:
return new PartialViewAsPdf("PreviewDocument", pdfModel)
{
PageSize = Size.A4,
FileName = "PDF Doc.pdf"
};
And it'll create the file for you. :)

Answer 2

I finally got a way to do this.
Actually rotativa's method "return new ViewAsPdf(model)" returns HttpResponseStream. Where we can hardly do something. But we can modify/alter the response once the action get executed by using custom attribute. We can override OnResultExecuted() method of action filter.
Controller's action
[HttpGet]
[ActionDownload] //here a custom action filter added
public ActionResult DownloadDocument()
{
var htmlContent = "<h1>sachin Kumar</hi>";
var model = new PdfInfo {FtContent = htmlContent, FtName = "Populate Form"};
return new ViewAsPdf(model);
}
Custom Action filter:
public class ActionDownloadAttribute : ActionFilterAttribute
{
public override void OnResultExecuted(ResultExecutedContext filterContext)
{
//Add content-disposition header to response so that browser understand to download as an attachment.
filterContext.HttpContext.Response.AddHeader("content-disposition", "attachment; filename=" + "Report.pdf");
base.OnResultExecuted(filterContext);
}
}

Answer 3

You can use return new ActionAsPdf. No custom attributes or anything else required.
Example: https://github.com/webgio/Rotativa/
public ActionResult PrintPreviewDocument()
{
return new ActionAsPdf("PreviewDocument") { FileName = "PDF Doc.pdf" };
}
public ActionResult PreviewDocument()
{
var htmlContent = Session["html"].ToString();
var model = new PdfInfo { Content = htmlContent, Name = "PDF Doc" };
return View(model);
}