ArcGISWindowsPhoneSDK.ShadedReliefImageService.ApplyButton_Click C# (CSharp) Method

        private void ApplyButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                ArcGISImageServiceLayer imageLayer = MyMap.Layers["ImageServiceLayer"] as ArcGISImageServiceLayer;
                RenderingRule renderingRule = new RenderingRule();
                Dictionary<string, object> rasterParams = new Dictionary<string, object>();

                if (SRRadioButton.IsChecked.Value)
                {
                    renderingRule.RasterFunctionName = "ShadedRelief";
                    renderingRule.VariableName = "Raster";

                    rasterParams.Add("Azimuth", string.IsNullOrEmpty(AzimuthTextBox.Text) ? 0 : double.Parse(AzimuthTextBox.Text));
                    rasterParams.Add("Altitude", string.IsNullOrEmpty(AltitudeTextBox.Text) ? 0 : double.Parse(AltitudeTextBox.Text));
                    rasterParams.Add("ZFactor", string.IsNullOrEmpty(ZFactorTextBox.Text) ? 0 : double.Parse(ZFactorTextBox.Text));

                    if (ColormapCheckBox.IsChecked.Value)
                        rasterParams.Add("Colormap", CreateColorMap());
                    else
                    {
                        renderingRule.RasterFunctionName = "Hillshade";
                        renderingRule.VariableName = "DEM";
                    }
                    renderingRule.RasterFunctionArguments = rasterParams;
                }
                else
                {
                    renderingRule.RasterFunctionName = "Slope";
                    renderingRule.VariableName = "DEM";

                    rasterParams.Add("ZFactor", string.IsNullOrEmpty(ZFactorTextBox.Text) ? 0 : double.Parse(ZFactorTextBox.Text));

                    renderingRule.RasterFunctionArguments = rasterParams;
                }

                imageLayer.RenderingRule = renderingRule;
                imageLayer.Refresh();

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }