C# - Share A Web Page (asp) With Others?

Here is what I'm trying to do :

The user accesses a web page (asp.net web application), makes his selections and applies filters to render the screen. Now I'm looking for a way to share this view with somebody else who also has access to the application.

Although in a simple scenario this can achieved through query strings and sharing the URL, how can this be achieved in a more complicated scenario where a bunch of selections / filters are applied to render a view ?

To start with, I implemented a basic framework. A datastructure will hold key value pairs which represents the controls and the values associated with it. I persist this to a database and the page will be responsible to parse the key-value collection and render itself but I think this may not be practical when there are complex controls like a grid with features such as grouping, filtering etc.

Most importantly, it would be great if the solution does'nt force the aspx to be implemented in a certain way for them to be persisted.