Is there a way to enhance file upload experience on my web application beyond the usual animated gif? I'm currently using .Net, but open to platform agnostic solutions as well.
Is there a way to enhance file upload experience on my web application beyond the usual animated gif? I'm currently using .Net, but open to platform agnostic solutions as well.
If you're curious about how this process typically operates on the client side, here's a basic overview:
Most solutions connect the form to JavaScript and redirect the form's target to a newly created, hidden IFRAME. This allows them to utilize AJAX to check the file status with the server.
The use of the IFRAME is necessary because all scripts running in the upload window will pause until the request is completed, signaling that the file has been fully uploaded.
If you're in search of some popular Javascript toolkits, here are a few recommendations:
Efficiently Uploading Files in ASP.NET with Dynamic Progress Tracking
After experimenting with various methods, I found the most success using SWFUpload.
When utilizing SWFUpload, you can create and interact with an object using JavaScript while also incorporating a hidden Flash file for tasks such as file selection, uploading, and monitoring upload progress. This tool allows you to define a variety of JavaScript event handlers (uploadStarted, uploadProgress, uploadError, etc.) which are called by the Flash during the upload process, providing great flexibility. Additionally, SWFUpload includes a file queue feature making it suitable for handling single or multiple files.
For further information, check out the following links:
Looking for help with progress bars in .NET? Check out Dino Esposito's articles in MSDN Magazine from last July and August:
Improving User Experience with AJAX (July '07)
Enhancing Server-Side Functionality with ASP.NET AJAX (August '07)
An excellent demonstration of accomplishing this task without the need for Ajax can be found in a tutorial authored by Nilesh Thakkar on CodeProject.
Explore the jQuery UI Progressbar at this link
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