What's it written in?
The primary languages that Microsoft want you to use in the .Net framework are C# and VB.Net, both easy enough to understand.
As far as this being "hard" -- what he said. It's no more than defining the field as <asp:HiddenField ID="HiddenField1" Runat="server" /> on your .aspx web page and putting "container_variable = HiddenField1.Value" in the code in your Page_Load event.
When the page reloads, ASP.Net can detect if the value changed and you deal with it in the ValueChanged event for the HiddenField1 control. If the value hasn't changed, then the HiddenField1_ValueChanged method is not triggered.
"Chicago to my mind was the only place to be. ... I above all liked the city because it was filled with people all a-bustle, and the clatter of hooves and carriages, and with delivery wagons and drays and peddlers and the boom and clank of freight trains. And when those black clouds came sailing in from the west, pouring thunderstorms upon us so that you couldn't hear the cries or curses of humankind, I liked that best of all. Chicago could stand up to the worst God had to offer. I understood why it was built--a place for trade, of course, with railroads and ships and so on, but mostly to give all of us a magnitude of defiance that is not provided by one house on the plains. And the plains is where those storms come from."
-- E.L. Doctorow
