ArcGISWindowsPhoneSDK.ClipFeatures.MyDrawObject_DrawComplete C# (CSharp) Method

        private void MyDrawObject_DrawComplete(object sender, DrawEventArgs args)
        {
            MyDrawObject.IsEnabled = false;

            processingGrid.Visibility = Visibility.Visible;
            _processingTimer.Start();

            GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;

            Graphic graphic = new Graphic()
            {
                Symbol = LayoutRoot.Resources["ClipLineSymbol"] as ESRI.ArcGIS.Client.Symbols.LineSymbol,
                Geometry = args.Geometry
            };
            graphicsLayer.Graphics.Add(graphic);

            Geoprocessor geoprocessorTask = new Geoprocessor("http://serverapps10.esri.com/ArcGIS/rest/services/SamplesNET/USA_Data_ClipTools/GPServer/ClipCounties");
            geoprocessorTask.UpdateDelay = 5000;
            geoprocessorTask.JobCompleted += GeoprocessorTask_JobCompleted;

            List<GPParameter> parameters = new List<GPParameter>();
            parameters.Add(new GPFeatureRecordSetLayer("Input_Features", args.Geometry));
            parameters.Add(new GPLinearUnit("Linear_unit", esriUnits.esriMiles, Int32.Parse(DistanceTextBox.Text)));

            geoprocessorTask.SubmitJobAsync(parameters);
        }