Did you know a bad or not good ASP.NET file upload control will cause your web site to open up a possible vulnerability to a denial of service attack? If your web site is very important to you, you should consider it! CSUpload control package is a powerful ASP.NET 2.0 File Upload control, the package contains CSUpload and CSUploadProgressPanel controls to empower your web application with strong files uploading features. CSUpload is a powerful file uploading control with many advanced features. CSUpload also have a highly efficient HttpModule, which provides scalable file upload handling functions. With CSUpload's HttpModule, you can easily include the huge file upload feature (the file size can be up to 2GB) to your web application. CSUpload's HttpModule will consume minimum amount of server memory while starting file uploads. This can avoid many web site maintenance issues with file uploading applications.