ArcGISWindowsPhoneSDK.RasterFunctionImageService.RasterFunctionsComboBox_SelectionChanged C# (CSharp) Method

        private void RasterFunctionsComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ArcGISImageServiceLayer imageLayer = MyMap.Layers["MyImageLayer"] as ArcGISImageServiceLayer;
            var rasterFunction = (sender as ListPicker).SelectedItem as RasterFunctionInfo;
            if (rasterFunction != null)
            {
                RenderingRule renderingRule = new RenderingRule() { RasterFunctionName = rasterFunction.Name };
                imageLayer.RenderingRule = renderingRule;
                imageLayer.Refresh();
            }
        }