protected override void OnLoad(EventArgs e)
        {
            Type   type                = typeof(System.Object);
            string assembly            = type.Assembly.CodeBase.Replace("mscorlib.dll", "System.Windows.Forms.dll").Replace("file:///", "");
            string assemblyName        = System.Reflection.AssemblyName.GetAssemblyName(assembly).FullName;
            Type   unsafeNativeMethods = Type.GetType(System.Reflection.Assembly.CreateQualifiedName(assemblyName, "System.Windows.Forms.UnsafeNativeMethods"));

            System.Reflection.MethodInfo methodInfo = unsafeNativeMethods.GetNestedType("IOleObject").GetMethod("GetClientSite");
            _propertyPageSite = methodInfo.Invoke(this, null) as Microsoft.Office.Interop.Outlook.PropertyPageSite;
        }