在动态创建ASP.NET报表查看器Web控制问题

我要动态地创建ASP.NET报表查看器Web控件，但得到下面的异常：

I want to dynamically create an ASP.NET report viewer web control, but got the exception below:

报表查看器Web控制，需要在网络表单上System.Web.UI.ScriptManager。

The Report Viewer Web Control requires a System.Web.UI.ScriptManager on the web form.

下面是我的code：

    Microsoft.Reporting.WebForms.ReportViewer viewer = new Microsoft.Reporting.WebForms.ReportViewer();

    viewer.ServerReport.ReportServerUrl = "server url";
    viewer.ServerReport.ReportPath = "reprot path";

    System.Web.UI.ScriptManager scriptManager = new ScriptManager();
    Page page = new Page();
    System.Web.UI.HtmlControls.HtmlForm form = new HtmlForm();

    form.Controls.Add(scriptManager);
    form.Controls.Add(viewer);
    page.Controls.Add(form);

    page.DataBind();  //exception here

任何想法将非常AP preciated。

Any idea would be very much appreciated.