How to show pdf or image file retrived from ftp server in iframe

Question

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I want to show pdf or image file retreived from FTP server in IFrame control

What I have tried:

C#

string ParentFolder = ConfigurationManager.AppSettings["DocReqFolder"].ToString();
              int l = filePath.IndexOf('.') + 1;
              string Extn = filePath.Substring(l);
              Ftp_FileHandler Ftp = new Ftp_FileHandler();
              Ftp.FtpPath_withCredents();
              Ftp.FTP_DownloadFile(filePath, ParentFolder);
              var context = System.Web.HttpContext.Current;
              context.Response.Clear();
              context.Response.AddHeader("Content-Disposition", "attachment; filename=" + filePath);
              if (Extn.Contains("PDF") == true || Extn.Contains("pdf") == true)
                  HttpContext.Current.Response.ContentType = "application/pdf";
              else
                  HttpContext.Current.Response.ContentType = "application/octet-stream";
              context.Response.OutputStream.Write(Ftp.file, 0, Ftp.file.Length);
              context.Response.End();

Posted 26-Jun-18 1:39am

khaleelsyed

Updated 26-Jun-18 3:52am

v2

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Comments

Kornfeld Eliyahu Peter 26-Jun-18 7:45am

So, what's wrong with your code?

khaleelsyed 26-Jun-18 8:32am

abov code will download the file to my system.but i want show in iframe control

Kornfeld Eliyahu Peter 26-Jun-18 8:38am

Displaying file inside the browser or not is not a decision you always can make. It depends ion end user's preferences and file type too...

khaleelsyed 26-Jun-18 8:44am

end user preference is to show the retrieved file in iframe.

F-ES Sitecore 26-Jun-18 7:46am

make the src of the iframe the url of the page that code is on.

khaleelsyed 26-Jun-18 8:32am

what i have to assign to url of iframe

2 solutions

Solution 1

Set iframe's src attribute to point to the document:

HTML

<iframe src="https://i.ytimg.com/vi/7rB0Hvt1i3Q/maxresdefault.jpg">
  <p>Your browser does not support iframes.</p>
</iframe>

If you want to stream the content instead to pint to the file directly you can see here how:
Stream Your Documents Using Simple Web Page[^]

Posted 26-Jun-18 2:53am

Kornfeld Eliyahu Peter

Comments

khaleelsyed 26-Jun-18 9:12am

Can you please provide the code with example. i am not sure how set src to byte array.

Kornfeld Eliyahu Peter 26-Jun-18 9:15am

You can not! For that to understand you have to read and learn!

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Richard Deeming · Accepted Answer · 2018-06-26T03:54:00

Setting the Content-Disposition to attachment forces the browser to download the file.

Change it to inline to let the browser display the file inline:

C#

context.Response.AddHeader("Content-Disposition", "inline; filename=" + filePath);

Content-Disposition - HTTP | MDN[^]

NB: Some browsers don't support displaying PDFs inline. You'll need to use a library like PDF.js[^] if you need to support them.