Dynamically create and button and bind onclick event

<div>
        <asp:Panel ID="p1" runat="server">
        
        </asp:Panel>
    </div>
    </form>
    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

protected void Page_Load(object sender, EventArgs e)
    {
        Button MyButton = new Button();
        MyButton.ID="btn";
        MyButton.Text = "hhhhh";
        MyButton.Click += new EventHandler(MyButton_Click);
        p1.Controls.Add(MyButton);
    }

    protected void MyButton_Click(object sender, EventArgs e)
    {
        Label1.Text = "Hi";
    }