Wizard的动态添加

UI代码:
<form id="form1" runat="server">
        <asp:PlaceHolder id="PlaceHolder1" runat="server" />
 </form>
C#代码:
protected void Page_Load(object sender, EventArgs e)
    {
        Wizard Wizard1 = new Wizard();
        for (int i = 0; i <= 5; i++)
        {
            WizardStepBase newStep = new WizardStep();
            newStep.ID = "Step" + (i + 1).ToString();
            newStep.Title = "Step " + (i + 1).ToString();
            newStep.Controls.Add(new System.Web.UI.LiteralControl(" Step." + (i + 1).ToString()));
            Wizard1.WizardSteps.Add(newStep);
        }
        PlaceHolder1.Controls.Add(Wizard1);
    }