Automatically Begin Upload ASP.NET

Without using a third-party control, is it possible to automatically begin uploading a file as soon as the user selects a file and the file browser window closes? I have the data struture in place as we开发者_开发技巧ll as all the information needed to capture the data, but I need a way of knowing if the file upload has changed? Is there an event that fires, or something I can capture to achieve this?

Thanks, George

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No. Not without using a third-party control.

It looks like it is possible using a hidden <IFRAME>. Check out the AJAX File Uploader.

There are simple Silverlight and Flash solutions available as well, however.