将服务器端生成的PDF发送到浏览器

Question

I have an AJAX call that calls a static WebMethod on the Server side. The Server side Method returns a MemoryStream containing the byte stream of the PDF file. How can I then use this PDF byte stream on the client side in the success method of the AJAX call, to somehow trigger the PDF file download. I would also don't what to do a full postback of the page.

I've used this as reference: http://forums.asp.net/t/1377154.aspx?Download+from+Javascript But I would like to have a full example achieving this.

function generatePDF(param1, param2, param3) {
    $.ajax({
        type: 'POST',
        url: 'Page.aspx/GeneratePDF',
        data: '{ "param1" : "' + param1+ '", "param2" : "' + param2+ '", "param3" : "' + param3+ '" }',
        contentType: 'application/json; charset=utf-8',
        dataType: 'json',
        success: function (pdf) {

            //from here somehow, download the generated PDF file
        }
    });
}

Answer 1

I haven't personally done this, but the first thing I would try would be:

On the server side dynamically build the appropriate HTML document and CSS Use phantomJS to render that document Tell phantomJS to convert that document to PDF, saved in a temp file Send the PDF back as the HTTP response by writing the temp PDF file to the response body Delete the temp file If you are struggling with content-type, content-disposition, etc, you shouldn't have to worry about that if you have a valid pdf file on disk and just write that data to the HTTP response. With the right headers, you should be able to ask the browser to either display the PDF or treat it as a file to be saved as a download.

Answer 2

Here I would suggest you to use

Window.open('~/path/name.pdf');

using this you can display the pdf on browser and can save and print from browser.

Answer 3

try this, Selected bytes from database and give to content.

byte[] content = "Select Your Bytes From Database";
HttpContext.Current.Response.Buffer = false;
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.AppendHeader("content-disposition","attachment;filename=" + fileName);
HttpContext.Current.Response.ContentType = "Application/pdf";
//Write the file content directly to the HTTP content output stream.
HttpContext.Current.Response.BinaryWrite(content);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();