Method for associating state information with an ASP.NET control?

Question

What is the best method or best practice for associating state information with an ASP.NET control?

The context is that I'm dynamically generating a user poll. I may have several polls to choose from that the user could answer. I will dynamically generate the label prompt, radio selections, validation, and submit button. Currently I am storing the ID as part of the control name.

In other words, I use the control name to relate the dynamically generated content to the proper database object. I do not like 2 aspects of this method:

1. It feels like a hack, I am storing ID's as part the control name, a form of data mangling.
2. It exposes some of the database structure.

I am more concerned with issue #1. Is there built-in control state-bag that is suitable for this? I know there is control state but expanding every control to hold my IDs is overkill. Is there anyway that I can use that control state to store my IDS without having to do sub-classing?

Perhaps, using Viewstate in this fashion would be the best option (from 4guysfromrolla):

  public int PollID
  {
    get 
    {
        if (ViewState["PollID"] == null)
            return -1;
        else
            return (int)ViewState["PollID"];
    }
    set { ViewState["PollID"] = value; }
}