AutoCompleteExtender - Get Primary Key into HiddenField
<p>I want to use autoComplete extender in a way similar to a dropDownList.
Currently I have a dropdown List that holds a collection of companies. Selecting a company name enables me to get the value associated with the listItem.</p>

<p>I want to replace the dropDownList with autocomplete extender and place a text box. While typing user will be able to view the company. After selecting the company, I want to capture the value (such as company ID). I don't want this ID to be visible to user.</p>

<p>Please advice how to achieve this functionality with autoComplete extender.</p>
