
This is a custom webcontrol that shows the progress of long sequential tasks using AJAX to refresh the page.
I needed this for a web form where the user would click a button and the system would send e-mails for a group of people. To enhance the responsiveness of the system, I had the idea of showing the progress of each e-mail being sent. Then I realized this idea could be used in many other situations where tasks need to be synchronously executed.
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