Hi Albert,
You cannot use the standard ASP.NET Wizard control for this scenario, because it makes postbacks after every step and the container that holds the
RadAsyncUpload will be lost. Better use another control which will allow you to make a client side switching between the steps. For example
RadTabStrip can switch between the steps (Tabs). Note that this must happens on the client. This way the
RadAsyncUpload will always exist on the page and will be able to persist file uploads. Similar demo could be found
here.
Regards,
Hristo Valyavicharski
Telerik
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