Downloading a file through Form Submit, want an callback for failure

Question

I need to export tables from database to generate a Excel file so the user can download. I am currently using the plain form submit with hidden iframe, and the endpoint generates a response that contains Content-Disposition.

But, I need to display a message to user if server is fails to generate excel file is or any Server-side Error / Exception occurs.

I switched to use Jquery form plugin. While it does give me the response body, but it won't trigger the Save.

Are there any other alternatives to it ?

What backend are you using? You should probably do this with an AJAX call instead... — Milney, Apr 21 '17 at 09:31
WCF (C#) i have tried ajax call, it gives the callback for success and error both but doesn't download the file. @Milney — Tapas Thakkar, Apr 21 '17 at 09:50
You can try this way: http://stackoverflow.com/questions/16086162/handle-file-download-from-ajax-post — Milney, Apr 21 '17 at 10:01
i have tried that @Milney bro.. but it's not a good solution, it takes the twice of time than simple form submit, because it will fire a same proxy twice, first to check whether it succeed or not and another one for file download. — Tapas Thakkar, Apr 21 '17 at 10:12

score 1 · Accepted Answer · edited May 23 '17 at 11:55

1

After trying jQuery, Ajax and lot.. finally got an proper solution.

jQuery ajax is not able to handle binary responses properly (can't set responseType), so it's better to use a plain XMLHttpRequest call

Here is The Answer :-)

edited May 23 '17 at 11:55

Community

1
1

answered Apr 21 '17 at 11:02

Tapas Thakkar

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score 0 · Answer 2 · answered Jan 04 '18 at 09:38

use jQuery.fileDownload.js

$.fileDownload(url,{
                    httpMethod: 'get',
                    data:$("#"+formId).serialize(),
                    prepareCallback:function(url){

                    },
                    successCallback:function(url){

                    },
                    failCallback: function (html, url) {

                    }
                 });

and server side add response.setHeader("Set-Cookie", "fileDownload=true; path=/");

Downloading a file through Form Submit, want an callback for failure

2 Answers2