SuperMap.Web.ISDotNET6.MeasureService.ProcessAsync C# (CSharp) Method

        public void ProcessAsync(MeasureParameters parameters, object state)
        {
            if (parameters == null)
            {
                //TODO:资源
                throw new ArgumentNullException(ExceptionStrings.ArgumentIsNull);
                //throw new ArgumentNullException("MeasureParameters is Null");
            }
            if (string.IsNullOrEmpty(this.Url))
            {
                //TODO:资源
                throw new InvalidOperationException(ExceptionStrings.InvalidUrl);
                //throw new InvalidOperationException("Url is not set");
            }
            base.SubmitRequest(base.Url + "/common.ashx?", GetParameters(parameters),
                new EventHandler<RequestEventArgs>(request_Completed), state, false);
        }

        //距离量算
        private void line_DrawCompleted(object sender, DrawEventArgs e)
        {
            //将线标绘在客户端要素图层
            PredefinedLineStyle lineStyle = new PredefinedLineStyle { Stroke = new SolidColorBrush(Colors.Red), StrokeThickness = 3 };
            Feature feature = new Feature
            {
                Geometry = e.Geometry,
                Style = lineStyle
            };
            featuresLayer.Features.Add(feature);

            MeasureParameters parameters = new MeasureParameters
            {
                Geometry = e.Geometry,
                MapName = "changchun"
            };
            MeasureService measureDistance = new MeasureService("http://localhost/IS/AjaxDemo");
            measureDistance.ProcessAsync(parameters);
            measureDistance.ProcessCompleted += new EventHandler<MeasureEventArgs>(measureDistance_ProcessCompleted);
            measureDistance.Failed += new EventHandler<ServiceFailedEventArgs>(measure_Failed);
        }