Unable to open blob url in IE with print dialog

Question

I'm trying to open a PDF file with print dialog in IE Edge, it works fine in chrome but not in IE

MVC code to return file using Evo Pdf tool:

var restClient = new RestClient(Request.Url.Scheme + "://" + Request.Url.Authority);
var restResponse = restClient.Execute(request);
if (restResponse.StatusCode == HttpStatusCode.OK)
 {
     htmlModel.HtmlString = restResponse.Content;
     byte[] pdfBytes = PdfUtil.GetEvoPdfBytes(htmlModel);
     if (pdfBytes != null)
        {
             return File(pdfBytes, System.Net.Mime.MediaTypeNames.Application.Pdf, htmlModel.PdfName + ".pdf");
        }
 }

Javascript code to open file with print dialog, below code works in chrome but not IE:

var req = new XMLHttpRequest();
        req.open("POST", "/api/HtmlToPdf", true);
        req.setRequestHeader("Content-Type", "application/json");
        req.responseType = "blob";

        req.onload = function (event) {
            var blob = req.response;
            console.log(blob.size);
            var lin = window.URL.createObjectURL(blob);
            // Works in chrome
            var mywindow = window.open(lin, "_blank");
            mywindow.focus();
            mywindow.print();
        };
        req.send(JSON.stringify(
            {
                htmlModel: {
                    ElementSelector: "#div",
                    PageOrientation: "Portrait",
                    PdfName: "abc"
                }
            }));

score 0 · Answer 1 · answered Sep 27 '19 at 07:38

IE11 does not support URL.createObjectURL(). So your code will not work for IE browser and you will not be able to open the blob with print dialog..

As a work around, you need to use msSaveBlob or msSaveOrOpenBlob for Internet Explorer browser.

These methods allow a user to save the file on the client as if the file had been downloaded from the Internet.

var blobObject = new Blob(["This is sample text..."]);

window.navigator.msSaveOrOpenBlob (blobObject, 'msSaveOrOpenBlob_testFile.txt');

References:

(1) Download a blob from HTTP URL in IE 11

(2) Saving files locally using Blob and msSaveBlob

(3) Blob download is not working in IE

You will not be able to open that file using print dialog. You need to download the file. — Deepak-MSFT, Sep 27 '19 at 11:59

Unable to open blob url in IE with print dialog

1 Answers1