silverlight调用Geometry服务实现缓冲区

概述Geometry服务发布： 前端代码： <UserControl x:Class="SilverlightApplication5.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/x

Geometry服务发布：

前端代码：

<UserControl x:Class="SilverlightApplication5.MainPage"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:d="http://schemas.microsoft.com/Expression/blend/2008"                 xmlns:esri="http://schemas.esri.com/arcgis/clIEnt/2009"    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"    mc:Ignorable="d"    d:DesignHeight="300" d:DesignWIDth="400">    <GrID x:name="LayoutRoot" Background="White">        <GrID.Resources>            <esri:PictureMarkerSymbol x:Key="DefaultClickSymbol" OffsetX="11" OffsetY="39" Source="/car-red-16x16.png" />            <esri:SimpleFillSymbol x:Key="DefaultBufferSymbol" Fill="#660000FF" borderBrush="Blue" borderThickness="2"  />        </GrID.Resources>        <esri:Map name="MyMap" MouseClick="Buffer_MouseClick"  Extent="-122.5009,37.741,-122.3721,37.8089">            <esri:ArcGISTiledMapServiceLayer ID="ESRIMap" Url="http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>            <esri:Graphicslayer ID="MyGraphicslayer">                            </esri:Graphicslayer>        </esri:Map>        <GrID HorizontalAlignment="Right" VerticalAlignment="top" margin="0,10,0" >            <Rectangle Fill="#77919191" stroke="Gray"  RadiusX="10" RadiusY="10" margin="0,5" >                <Rectangle.Effect>                    <DropShadowEffect/>                </Rectangle.Effect>            </Rectangle>            <Rectangle Fill="#FFFFFFFF" stroke="DarkGray" RadiusX="5" RadiusY="5" margin="10,15" />            <TextBlock x:name="informationTextBlock" Text="Click on map to set a location. A buffer of 5 miles will be displayed."                        WIDth="200" TextAlignment="left" margin="30,20,25,30" textwrapPing="Wrap" />        </GrID>    </GrID></UserControl>

 

后台代码：

private voID ArcGISDynamicMapServiceLayer_InitializationFailed(object sender,EventArgs e)        {            Layer layer = sender as Layer;            MessageBox.Show(layer.InitializationFailure.Message);        }        private voID Buffer_MouseClick(object sender,Map.MouseEventArgs e)        {            Graphicslayer graphicslayer = MyMap.Layers["MyGraphicslayer"] as Graphicslayer;            graphicslayer.Cleargraphics();            e.MapPoint.SpatialReference = MyMap.SpatialReference;            Graphic graphic = new Graphic()            {                Geometry = e.MapPoint,Symbol = LayoutRoot.Resources["DefaultClickSymbol"] as Symbol            };            graphic.SetZIndex(1);            graphicslayer.Graphics.Add(graphic);            GeometryService geometryService = new GeometryService("http://localhost/arcgis/rest/services/Geometry/GeometryServer");            geometryService.BufferCompleted += new EventHandler<GraphicsEventArgs>(geometryService_BufferCompleted);            geometryService.Failed += new EventHandler<TaskFailedEventArgs>(geometryService_Failed);            BufferParameters bufferParams = new BufferParameters() {                 Unit=linearUnit.StatuteMile,BufferSpatialReference=new ESRI.ArcGIS.ClIEnt.Geometry.SpatialReference(4326),OutSpatialReference=MyMap.SpatialReference            };            bufferParams.Features.Add(graphic);            bufferParams.distances.Add(1);            geometryService.BufferAsync(bufferParams);        }        voID geometryService_Failed(object sender,TaskFailedEventArgs e)        {            MessageBox.Show("Geometry ServiceException error:"+e.Error);        }        voID geometryService_BufferCompleted(object sender,GraphicsEventArgs e)        {            IList<Graphic> result = e.Results;            Graphicslayer graphicslayer = MyMap.Layers["MyGraphicslayer"] as Graphicslayer;            foreach (Graphic graphic in result)            {                graphic.Symbol = LayoutRoot.Resources["DefaultBufferSymbol"] as Symbol;                graphicslayer.Graphics.Add(graphic);            }        }

 

结果：

总结

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