ArcGIS API for Silverlight QueryTask 查询方法使用

概述private void InitAnimation() { QueryTask queryTask = new QueryTask("http://192.168.0.1:6080/arcgis/rest/services/···"); queryTask.ExecuteCompleted += QueryTask_ExecuteC

private voID InitAnimation()        {            queryTask queryTask = new queryTask("http://192.168.0.1:6080/arcgis/rest/services/···");            queryTask.ExecuteCompleted += queryTask_ExecuteCompleted;            ESRI.ArcGIS.ClIEnt.Tasks.query query = new ESRI.ArcGIS.ClIEnt.Tasks.query();            query.ReturnGeometry = true;            //query.Where = "FractureSurfaceID" + "=" + "1" + " or " + "FractureSurfaceID" + "=" + "2";支持任何合法的sql Where语句            query.Where = "1=1";            query.OutSpatialReference = new SpatialReference(102100); //输出要素的坐标系            query.OutFIElds.Add("*"); //想要查询的字段  "*"表示全部字段            queryTask.ExecuteAsync(query);        }        private voID queryTask_ExecuteCompleted(object sender,ESRI.ArcGIS.ClIEnt.Tasks.queryEventArgs args)        {            Featureset featureset = args.Featureset;            Graphicslayer graphicslayer = MyMap.Layers["MyGraphicslayer"] as Graphicslayer;            SpatialReference SR = graphicslayer.SpatialReference;            //一一读取查询的结果            if (featureset != null && featureset.Features.Count > 0)            {                for (int i = 0; i < featureset.Features.Count; i++)                {                    Graphic selectedFeature = featureset.Features[i];                     //查询结果高亮闪烁显示                    selectedFeature.Symbol = LayoutRoot.Resources["StrobeMarkerSymbol"] as ESRI.ArcGIS.ClIEnt.Symbols.Symbol;                    graphicslayer.Graphics.Add(selectedFeature);                }            }            else            {            }        }

<GrID.Resources>            <esri:MarkerSymbol x:Key="StrobeMarkerSymbol">                <esri:MarkerSymbol.ControlTemplate>                    <ControlTemplate>                        <Canvas>                            <visualstatemanager.VisualStateGroups>                                <VisualStateGroup x:name="CommonStates">                                    <VisualState x:name="normal">                                        <Storyboard RepeatBehavior="ForEver">                                            <DoubleAnimation BeginTime="0"																 Storyboard.Targetname="ellipse" Storyboard.TargetProperty="(UIElement.Rendertransform).(Scaletransform.ScaleX)"																 From="1" To="10" Duration="00:00:01" />                                            <DoubleAnimation BeginTime="0"																 Storyboard.Targetname="ellipse" Storyboard.TargetProperty="(UIElement.Rendertransform).(Scaletransform.ScaleY)"																 From="1" To="10" Duration="00:00:01" />                                            <DoubleAnimation BeginTime="0"																 Storyboard.Targetname="ellipse" Storyboard.TargetProperty="(UIElement.Opacity)"																 From="1" To="0" Duration="00:00:01" />                                        </Storyboard>                                    </VisualState>                                    <!--<VisualState x:name="normal" />-->                                </VisualStateGroup>                            </visualstatemanager.VisualStateGroups>                            <Ellipse Height="10" WIDth="10" Canvas.left="-5" Canvas.top="-5" 										 RendertransformOrigin="0.5,0.5" x:name="ellipse"										 IsHitTestVisible="True"										 >                                <Ellipse.Rendertransform>                                    <Scaletransform />                                </Ellipse.Rendertransform>                                <Ellipse.Fill>                                    <RadialGradIEntBrush>                                        <GradIEntStop color="#00FF0000" />                                        <GradIEntStop color="#FFFF0000" Offset="0.25"/>                                        <GradIEntStop color="#00FF0000" Offset="0.5"/>                                        <GradIEntStop color="#FFFF0000" Offset="0.75"/>                                        <GradIEntStop color="#00FF0000" Offset="1"/>                                    </RadialGradIEntBrush>                                </Ellipse.Fill>                            </Ellipse>                            <Ellipse Height="10" WIDth="10" Canvas.left="-5" Canvas.top="-5" 										 Fill="#FFFF0000" x:name="ellipse1"/>                        </Canvas>                    </ControlTemplate>                </esri:MarkerSymbol.ControlTemplate>            </esri:MarkerSymbol>        </GrID.Resources>

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