public static class LayoutManager
    {
        private const string SetFlagMethodName = "SetFlags";
        private static void SetFlag(this Visual obj, params object[] parameters )
        {
            var type = typeof (Visual);
            var мisualFlagsType = GetVisualFlagsType();
            var method = type.GetMethod(SetFlagMethodName, BindingFlags.Instance | BindingFlags.NonPublic, Type.DefaultBinder, new[] { typeof(bool), мisualFlagsType }, null);
            method.Invoke(obj, parameters);

        }

        public static void SusspedLayout(Visual control)
        {
            control.SetFlag(true, 8U);
        }

        public static void ResumeLayout(Visual control)
        {
            control.SetFlag(false, 8U);
        }

        private static Type GetVisualFlagsType()
        {
            var assembly = Assembly.Load("PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35");
            return assembly.GetType("System.Windows.Media.VisualFlags");
        }
    }