User control executing method in main page

It seems I need to reset the delegate in my UC on every connection. I guess this makes sense since there is nothing in session state that keeps the delegate set. Code is below in case someone wants to point out a better way to do this. Thanks!

public delegate void CallBack(string s); // this is a global in a class file

public partial class _Default : System.Web.UI.Page // this is the container page
{
    CallBack function1;
    protected void Page_Load(object sender, EventArgs e)
    {
        function1 = new CallBack(method2exec);
        ChildUC1.SetDelegate(function1);
        // this code is required on every connection because it's not preserved
    }
    public void method2exec(string s)
    {
        txtInfo.Text = "UC executed parent method"; // textbox on this page
    }
}

public partial class ChildUC : System.Web.UI.UserControl // this is the user control
{
    CallBack parentMethod;
    protected void Button1_Click(object sender, EventArgs e) // button on this page
    {
        parentMethod("Child button clicked");
    }
    public void SetDelegate(CallBack foreignMethod)
    {
        parentMethod = foreignMethod;
    }
}


As usual the answer comes almost as soon as I hit the Post button to ask the question - go figure.