c# – UserControl的事件处理程序没有触发

我在这里错过了什么？
谢谢！

包含ASPX页面：

protected override void OnPreRender(EventArgs e)
{
    if (MultiView1.ActiveViewIndex == 2) //If the tab is selected,load control
    {
        Control Presenter = LoadControl("Presenter.ascx");
        (MultiView1.ActiveViewIndex.Views[2].Controls.Add(Presenter);
    }
    base.OnPreRender(e);
}

Presenter.ascx.cs

override protected void OnInit(EventArgs e)
{
    Retry.Click += this.Retry_Click; //This is a .Net 2.0 project
    base.OnInit(e);
}


protected void Retry_Click(object sender,EventArgs e)
{
    //This never fires
}