How do you access the content of a ASP.NET control?

<uc1:TestControl ID="TestControl1" runat="server">
        <div>More random HTML, etc...</div>
    </uc1:TestControl>

[ParseChildren(false)]
public partial class TestControl : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
}