可以'；t填充RibbonMenu

我需要在运行时用数据库中的一些数据填充RibbonMenu控件。

我把我的补偿计入：http://msdn.microsoft.com/en-us/library/microsoft.office.tools.ribbon.ribbonmenu(v=vs.90(.aspx

代码：

private void PopulateCustomerMenu()
{
    // Add two sub-menus to EmployeeMenu and populate each sub-menu
    // First sub-menu
    RibbonMenu subMenu1 = new RibbonMenu(); //new RibbonMenu(); is underlined red
    subMenu1.Dynamic = true;
    subMenu1.Label = "A - M";
    subMenu1.Items.Add(new RibbonToggleButton()); //new RibbonToggleButton() is as well
    ((RibbonToggleButton)subMenu1.Items.Last()).Label = "Hall, Don";
    subMenu1.Items.Add(new RibbonToggleButton()); //new RibbonToggleButton() is as well
    ((RibbonToggleButton)subMenu1.Items.Last()).Label = "Valdez, Rachel";
    CustomerMenu.Items.Add(subMenu1);
    // Second sub-menu
    RibbonMenu subMenu2 = new RibbonMenu(); //new RibbonMenu(); is as well
    subMenu2.Dynamic = true;
    subMenu2.Label = "N - Z";
    subMenu2.Items.Add(new RibbonToggleButton()); //new RibbonToggleButton() is as well
    ((RibbonToggleButton)subMenu2.Items.Last()).Label = "Robinson, Alex";
    CustomerMenu.Items.Add(subMenu2);
}

我只听到Visual Studio说"错误1无法创建抽象类或接口'Microsoft.Office.Tools.Ribbon.RibbonMenu'C:''Users''Christoffer''Documents''Visual Studio 2010''Projects''OutlookAddIn2''OutlookAddIn2''Ribbon1.cs 80 35 OutlookAddIn2">

我已经被困了15个小时，所以我对任何事情都持开放态度。。。。有什么想法吗？