Connect and share knowledge within a single location that is structured and easy to search. I hope I am not re-posting the same issue, because I think this is very common issue and yes I have searched this forum, found some suggestions but they didn't work for me. I have a button, and when I click on the button I want to download a file without refreshing the current view.
If there is any error I want to show that error in alert. The above function works. I see a download popup window. However what if there is error connecting to url, or there is exception inside the controller on the server.
In such case I want to show alert with error message. It makes the call to server, I see controller gets executed. There are some hacks that involve downloading the file into a hidden iframe and using a cookie to track whether or not it downloaded to simulate AJAX, however. This plugin gives you handlers so you can display a message like "The download has started" when it begins, and also handlers that fire on success and failure.
You could certainly implement the hidden iframe logic yourself, I've just found this plugin super easy to use personally.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 6 years, 7 months ago. The Files i. Word document, Excel file and PDF file are stored in a folder named Files inside the project directory. HTML Markup. Word document, Excel file and PDF file.
You will need to import the following namespaces. Imports System. The WebMethod accepts the name of the File to be downloaded as parameter.
Finally, the Byte Array is converted into Base64 string and returned. ToBase64String bytes, 0, bytes. Length ;. Return Convert. End Function. When any of the three Button is clicked, the DownloadFile JavaScript function is called and the name of the File is passed to it.
URL window. Config Setting. You will need to set the maxJsonLength property through Web. Config configuration using the system. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. Most popular in JavaScript. Convert a string to an integer in JavaScript Node. Most visited in JQuery.
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