Chrome-如何在浏览器显示文件后从服务器显示PDF文件并从服务器删除文件

Question

I have an ASP.NET web api app using JavaScript to open a link to a PDF file on a server. After opening I delete the file from the server. Using Firefox, Safari and IE I am able to see the file on the browser even after the file is deleted. When I run the function in Chrome I see no file and a 404 error displayed. How can I make this functionality work in Chrome as well?

Put Method in C# to delete PDF

    public void Put([FromBody]string filepath)
    {
         string pdfGUID_DIR = filepath.Split('/')[0]; //get the first part of the dir which is the folder name (GUID value)
         string tempDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, System.Configuration.ConfigurationManager.AppSettings["TemporaryDirectoryParent"], pdfGUID_DIR + @"\");

         try
         {
             Directory.Delete(tempDir, true);
         }
         catch (IOException)
         {
             Directory.Delete(tempDir, true);
         }
         catch (UnauthorizedAccessException)
         {
             Directory.Delete(tempDir, true);
         }
    }

JS Code to Open PDF

 window.open('/Report/' + pdfURL);  //Link to PDF file on server
 setTimeout(removePDF(pdfURL), 1000);

JS Function with AJAX call to delete PDF

  function removePDF(pdfURL) {
        $.ajax({
            url: '/api/pdf',
            type: 'PUT',
            data: "=" + pdfURL,
        });

    }

Answer 1

If you're not using MVC (even if you are, but you need to alter the ActionResult for that). Post the file as a Response and after you posted it, just dump it.

Response.ContentType = "application/pdf" 
Response.AddHeader("content-disposition", "attachment; filename=" + HttpUtility.UrlEncode(filename));
Response.WriteFile(fullpath);
Response.End();

    // dump file here: like
System.IO.File.Delete(fullpath);