How can I allow the user to upload several files with a single upload action in ASP.NET?

I want to allow a user to upload several files with one upload action. What is the simplest way to do this?

Solution

http://www.codeproject.com/KB/aspnet/FlashUpload.aspx

http://geekswithblogs.net/QuandaryPhase/archive/2009/10/02/asp.net-multiple-file-uploading.aspx

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