ArcGISWindowsPhoneSDK.StretchImageService.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();
                renderingRule.VariableName = "Raster";

                Dictionary<string, object> rasterParams = new Dictionary<string, object>();

                string[] strArray = BandIDsTextBox.Text.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);

                if (strArray.Length == 1 || strArray.Length == 2 || strArray.Length > 3)
                {
                    ValidBandIdsTextBlock.Visibility = System.Windows.Visibility.Visible;
                    return;
                }
                else
                    ValidBandIdsTextBlock.Visibility = System.Windows.Visibility.Collapsed;

                renderingRule.RasterFunctionName = "Stretch";
                renderingRule.VariableName = "Raster";

                int stretchType = 0;
                if (StandardDevCheckBox.IsChecked.Value)
                    stretchType = 3;
                else if (HistogramCheckBox.IsChecked.Value)
                    stretchType = 4;
                else if (MinMaxCheckBox.IsChecked.Value)
                    stretchType = 5;

                rasterParams.Add("StretchType", stretchType);
                rasterParams.Add("NumberOfStandardDeviations",
                    string.IsNullOrEmpty(StnDevTextBox.Text) ? 1 : double.Parse(StnDevTextBox.Text));

                double[][] statistics = new double[3][] {
                    new double[4] { 0.2, 222.46, 99.35, 1.64 },
                    new double[4] { 5.56, 100.345, 45.4, 3.96 },
                    new double[4] { 0, 352.37, 172.284, 2 } };
                rasterParams.Add("Statistics", statistics);

                double[] gamma = new double[] { 1.25, 2, 3.95 };
                rasterParams.Add("Gamma", gamma);

                int[] numArray = new int[strArray.Length];
                for (int i = 0; i < strArray.Length; i++)
                {
                    numArray[i] = int.Parse(strArray[i]);
                }

                imageLayer.BandIds = numArray.Length < 1 ? null : numArray;

                renderingRule.RasterFunctionArguments = rasterParams;
                imageLayer.RenderingRule = renderingRule;
                imageLayer.Refresh();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }