Placeholder and Dynamic usercontrols

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Hi

I am trying to make, lets say a One page webapp, which is driven by usercontrols to do various tasks.

I have a placeholder control which is where each new usercontrol is added.
Once i add the usercontrol to the placeholder, Then on the next post back the usercontrol disapears from the placeholder. So before posting to the server i cached the control and then i load the same control from the Page cache. This works fine to a certain extent, but my main question is

What other ways are there to perist the state of a usercontrols (along with all the child controls of the usercontrol).

How long is the Control kept in the page cache?

Thanks

 

[kahlua001]

Recreate your controls on postback, they are dynamic and do not persist through postbacks.