The value of the download attribute determines the name of the downloaded file. If this value is removed, then the downloaded filename will be the same as the original file name. In the above code, we download an image apple. Then we also created a download button to facilitate downloading files. This approach will create text data on the fly and then use JavaScript to create a text file and then download it.
Attach an event listener looking for a click to a download button. This file can be easily downloaded from the Nuget Gallery or from the Angular website. Js and FileUploader. Js and add the following code. JS and define the controller in that file as in the following. Now our objective is, after selecting the file, it will automatically read the file and show the file size in the page.
For this purpose, we called the onchange event of the file upload control and written the following code. Now our next objective is to upload the file using the Web API so that this specific file can be copied and saved in a specific location. For this, we already created a button name Upload. We need to click on this button for uploading.
When we click this button, it will call an AngularJs function that internally redirects to the Web API controller to copy and save the file into a specific location. Here I am using Temporary Internet Files folder for the location. Now write the following code first into the fileupload.
And the uploadComplete function checks if the Web API returns a status code in other words success or not. Now for the Web API code. For that, we will add a controller file within the controller folder named FileUploaderController and write the following code in that file.
Generic; using System. IO; using System. Linq; using System. To trigger a file download on a button click we will use a custom function or HTML 5 download attribute. Approach 1: Using Download attribute The download attribute simply uses an anchor tag to prepare the location of the file that needs to be downloaded. The name of the file can be set using the attribute value name, if not provided then the original filename will be used. Example: Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof.
But before you tackle the big projects, we suggest you start by learning the basics. Now at it's lowest price ever! Approach 2: Using a custom javascript function firstly made a textarea where all the text input will be issued.
Joe Pigott Joe Pigott 7, 5 5 gold badges 29 29 silver badges 42 42 bronze badges. Browsers that understand download treat it as a download, otherwise it's opened in a new tab. How can this be applied to a button object instead of just an a tag? Actually this only works for urls of the same origin as mentioned in the MDN docs.
This is a huge limitation if we are looking to develop a generic solution — Akshat Gupta. The question is explicitly asking to use a button instead of a link — Quentin. Show 9 more comments. Gray k 22 22 gold badges silver badges bronze badges.
Cfreak Cfreak In when the answer was originally posted it wasn't supported in any major browser. This doesn't necessarily trigger a download. It simply causes the browser to navigate to file. Whether that results in file. Show 3 more comments.
Ani Menon What if i wanna download a xml file? Thanks for your code. I have tested, it can working in IE, Chrome, Firefox. If you have a file acceptable by the browser like a PDF it will open in new tab instead to show download dialog. You could use window. Show 1 more comment. Stefanos Chrs Stefanos Chrs 1, 2 2 gold badges 14 14 silver badges 44 44 bronze badges. NicholasKyriakides Kind of reminds me of this gem: image.
BryanLarsen You are right, Firefox doesn't allow this without adding the element to body first. Thank you, updating the answer — Stefanos Chrs. Is there a way that javascript function be triggered once the download finishes? Just trying to show a message once downloads start and remove the message once download completes.
This is best solution out here and should be accepted answer. Show 6 more comments. Mark Amery k 67 67 gold badges silver badges bronze badges. Matt Ball Matt Ball k 95 95 gold badges silver badges bronze badges. Perfect, thanks. Do you happen to know if most servers will set the Content-Disposition to 'attachment' by default?
There is no "most. Don't rely on it being set. This issue has been driving me ballistic, and this was the only option that worked and is supported by IE. No jquery. This doest work if you're trying to download an image, it would open the image in the browser — Dheeraj.
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