Proxy server truncating View State
Question
Is there any way I can simulate a proxy server truncating a viewstate?
Solution
I avoid ViewState client-side entirely by putting it server-side. The code is about 5 lines long and I've seen a tremendous improvement in performance.
http://aspadvice.com/blogs/robertb/archive/2005/11/16/13835.aspx
You could fake a tampered viewstate easily using fiddler:
OTHER TIPS
How have you ascertained it is a proxy server? It doesn't sound likely that a proxy server would truncate parts of the HTML.
However, if ViewState is interfered with then ASP.NET will throw an Invalid Viewstate exception. So, erm,
throw new System.Web.UI.ViewStateException();
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