Retrieve Html Control Value in other Classes
<p>I have an element like this in <strong>Default.aspx</strong> :</p>

<pre><code>&lt;asp:HiddenField ID="hfID" runat="server" /&gt;
</code></pre>

<p>And now I need to retrieve this element value in another class like the following: </p>

<pre><code>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Sample001 {
    public class SlaveValue {
        public void RetrieveValue() {
        }
    }
}
</code></pre>

<p>How can I do this?</p>

<p>Edit:</p>

<p>It's some complicated, I add value to element inside of jQuery Script and when the request of jQuery Ajax send I need this value in HttpHandler to response correctly.</p>
