How can i show a document in iframe using ASP.NET MVC?

Question

In asp.net mvc project how can i work iframe to show a document file? I tried to do below the code like that,but when i run the project file has download...why??

 public FileStreamResult GetPDF()
        {
            FileStream fs = new FileStream(Server.MapPath(@"~/File/SegmentAdd.txt"), FileMode.Open, FileAccess.Read);
            return File(fs,"application/pdf","SegmentAdd.txt");         
        }

      <iframe src="@Url.Action("GetPDF","Home")"  width="90%" height="90%"></iframe>

This depends on the browser settings and the server http headers. See stackoverflow.com/questions/6293893/… for more details. — TeaCoder
– TeaCoder, Commented Jun 21, 2016 at 5:16
i don't understand now what should i do?if i use like that... return File(fs,"application/pdf","SegmentAdd.txt"); — Mehedi Islam
– Mehedi Islam, Commented Jun 21, 2016 at 5:29
There's nothing wrong with your code, however it still depends on the browser, does your browser contains a plugin to read pdf files? If it has, then most probably your code will work, but if your browser does not have the plugin then it will fallback to just downloading the pdf. — Bon Macalindong
– Bon Macalindong, Commented Jun 21, 2016 at 5:48
Bon Macalindong, I already plugin pdf reader into my chrome browser,but it does not work.It's always downloaded and doesn't show file.Qhat should i do...? — Mehedi Islam
– Mehedi Islam, Commented Jun 21, 2016 at 6:15

Jayaraj.K · Accepted Answer · 2016-06-21 07:53:21Z

2

Modify your code as follows

public FileStreamResult GetPDF()
{
     FileStream fs = new FileStream(Server.MapPath(@"~/File/SegmentAdd.txt"), FileMode.Open, FileAccess.Read);
     return File(fs, "text/plain");
}

Actually the content type of .txt file is

text/plain

I hope this will help you

UPDATE

Inorder to know the content type of each file types Please refer MIME Type list

edited Jun 21, 2016 at 7:53

answered Jun 21, 2016 at 7:09

Jayaraj.K

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8 Comments

Mehedi Islam Over a year ago

Thank you,Jayaraj.K It works. But one question when file type like .pdf/.doc or etc. what should be the content type?

Jayaraj.K Over a year ago

It depend upon your file which you are trying to show. Please refer freeformatter.com/mime-types-list.html, MIME Type column you can find content type to be used for each file.

Mehedi Islam Over a year ago

Thank you very much Jayaraj.K

Mehedi Islam Over a year ago

Hey Jayaraj,how r you? i have a problem in MapPath(" "); when i get file name from database how can i map in the filestream and how can i show on iframe?

Jayaraj.K Over a year ago

What problem you are facing in MapPath. Does it throws any error, If so post the issue as another question.

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