C# ASP.NET adding button event on usercontrol from loadcontrol

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C#

ASP.NET

I created a webpage, that content of witch i divided into namespaces containing different usercontrols.

On my default page i would like to dynamically add OnClick events to my loaded user controls, i tried this way:

using MyWebSite.CONTROL;

namespace MyWebSite
{

    public partial class _Default : System.Web.UI.Page
    {
        

        Navigation Navy;
        private void Create_MainTable()
        {

            Navy = (Navigation)LoadControl("~/CONTROL/Navigation.ascx");

            Navy.BtnHello.OnClientClick += new EventHandler(BtnHello_Click);
            
            
            MainPanelOnMySite.Controls.Add(Navy);
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.Page.IsPostBack)
            {
                this.Create_MainTable();

            }
            
        }

 
        protected void BtnHello_Click(object sender, EventArgs e)
        {
            Navy.BtnHello.Text = "HELLO WORLD";
        }
}

Unfortunately my OnClick event does not work, what can i do ?