private void PathAnalyst_Click(object sender, RoutedEventArgs e)
        {
            if (points.Count == 0)
            {
                MessageBox.Show("请指定服务点");
                return;
            }

            //定义 Point2D 类型的参数
            FindServiceAreasParameters<Point2D> paramPoint2D = new FindServiceAreasParameters<Point2D>
            {
                Centers = points,
                Weights = listweights,
                Parameter = new TransportationAnalystParameter
                {
                    ResultSetting = new TransportationAnalystResultSetting
                    {
                        ReturnEdgeFeatures = true,
                        ReturnEdgeGeometry = true,
                        ReturnEdgeIDs = true,
                        ReturnPathGuides = true,
                        ReturnRoutes = true,
                    },
                    WeightFieldName = "length",
                    TurnWeightField = "TurnCost",
                }
            };

            //与服务器交互
            FindServiceAreasService findServiceAreaService = new FindServiceAreasService("http://*****:*****@Changchun");
            findServiceAreaService.ProcessAsync(paramPoint2D);
            findServiceAreaService.ProcessCompleted += new EventHandler<FindServiceAreasEventArgs>(findServiceAreaService_ProcessCompleted);
            findServiceAreaService.Failed += new EventHandler<ServiceFailedEventArgs>(findServiceAreaService_Failed);
        }
        async private void PathAnalyst_Click(object sender, RoutedEventArgs e)
        {
            if (points.Count == 0)
            {
                await MessageBox.Show("请指定服务点");
                return;
            }

            if (string.IsNullOrEmpty(MyTextBox.Text))
            {
                await MessageBox.Show("请填写服务半径");
                return;
            }
            double radius;
            if (double.TryParse(MyTextBox.Text, out radius))
            {
                if (radius <= 0)
                {
                    await MessageBox.Show("服务半径必须大于0");
                    return;
                }
            }
            else
            {
                await MessageBox.Show("服务半径必须为数值");
                return;
            }
            //listweights用来添加服务半径,list记录点,点与半径一一对应
            //每次新添加的点用新添加的服务半径进行分析,以前的几个点的服务半径不变
            List<double> listweights = new List<double>();
            List<Point2D> list = new List<Point2D>();
            for(int count=i;count<points.Count;count++)
            {
                list.Add(points[count]);
                listweights.Add(radius);
            }
            //记录点的个数,下次分析从此点开始进行分析,之前的点仍用原服务半径
            i=points.Count;


            //定义 Point2D 类型的参数
            FindServiceAreasParameters<Point2D> paramPoint2D = new FindServiceAreasParameters<Point2D>
            {
                Centers = list,
                Weights = listweights,
                Parameter = new TransportationAnalystParameter
                {
                    ResultSetting = new TransportationAnalystResultSetting
                    {
                        ReturnEdgeFeatures = true,
                        ReturnEdgeGeometry = true,
                        ReturnEdgeIDs = true,
                        ReturnPathGuides = true,
                        ReturnRoutes = true,
                    },
                    WeightFieldName = "length",
                    TurnWeightField = "TurnCost",
                }
            };

            //与服务器交互
            try
            {
                FindServiceAreasService findServiceAreaService = new FindServiceAreasService("http://support.supermap.com.cn:8090/iserver/services/components-rest/rest/networkanalyst/RoadNet@Changchun");
                var result = await findServiceAreaService.ProcessAsync(paramPoint2D);
               
                foreach (SuperMap.WinRT.REST.NetworkAnalyst.ServiceArea p in result.ServiceAreaList)
                {

                    //将要素添加到图层
                    PredefinedFillStyle style = new PredefinedFillStyle();
                    style.Fill = new SolidColorBrush(Color.FromArgb(120, 179, 235, 246));
                    Feature area = new Feature();
                    area.Geometry = p.ServiceRegion;
                    area.Style = style;
                    featuresLayer.AddFeature(area);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
 private void ServiceAreas_Click(object sender, RoutedEventArgs e)
 {
     FindServiceAreasParameters<int> param = new FindServiceAreasParameters<int>
     {
         Centers = new List<int> { 2, 4 },
         Weights = new List<double> { 500, 1000 },
         IsCenterMutuallyExclusive = false,
         IsFromCenter = true,
         Parameter = new TransportationAnalystParameter
         {
             ResultSetting = new TransportationAnalystResultSetting
             {
                 ReturnEdgeFeatures = true,
                 ReturnEdgeGeometry = true,
                 ReturnEdgeIDs = true,
                 //ReturnImage = false,
                 ReturnNodeFeatures = true,
                 ReturnNodeGeometry = true,
                 ReturnNodeIDs = true,
                 ReturnPathGuides = true,
                 ReturnRoutes = true
             },
             //MapParameter = new NAResultMapParameter
             //{
             //    Viewer = new Rect(0, 0, 256, 256),
             //    Format = OutputFormat.PNG
             //},
             WeightFieldName = "length",
             TurnWeightField = "TurnCost"
         }
     };
     FindServiceAreasService serviceAreasService = new FindServiceAreasService(networkUrl);
     serviceAreasService.ProcessAsync(param);
     serviceAreasService.ProcessCompleted += new EventHandler<FindServiceAreasEventArgs>(serviceAreasService_ProcessCompleted);
     serviceAreasService.Failed += Failed;
 }