ArcGISWindowsPhoneSDK.ClipFeatures.ClearButton_Click C# (CSharp) Method

        private void ClearButton_Click(object sender, RoutedEventArgs e)
        {
            List<Layer> gpResultImageLayers = new List<Layer>();

            foreach (Layer layer in MyMap.Layers)
                if (layer is GraphicsLayer)
                    (layer as GraphicsLayer).ClearGraphics();
                else if (layer is GPResultImageLayer)
                    gpResultImageLayers.Add(layer);
            for (int i = 0; i < gpResultImageLayers.Count; i++)
                MyMap.Layers.Remove(gpResultImageLayers[i]);

            MyDrawObject.IsEnabled = true;
        }