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content  Multiple file uploads with progress bar using classic
ASP.NET and C#  By , 1 Sep 2010 Rate this: Please Sign up or
sign in to vote.   This article gives readers a fair idea of how
to create a progress bar while uploading single/multiple files
in a web based application. We had a requirement in one of our
projects for displaying a continuous progress bar along with
percentage uploaded. This article will provide you great
information about how to create such a control using ASP.NET 2.0
and .NET Framework 2.0. Also, the page on which this control is
deployed will not be posted back as the solution uses an IFrame
to load the file upload control. Users are free to access other
parts of the page while the upload is still in progress.   My
initial idea was to calculate the progress amount on the server
side and use a JavaScript timer function to read the server-side
progress amount, with the XMLHttpRequest object to update the
progress bar from t