Select Points inside selected polygon

Question

Dear All 
I Have two layer in my map service. one polygon,one point
i want to selecet point inside the selected polygon  
i m using http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#AttributeQuery
through this i can select polygon but how i can select points inside that selected polygon

required  code please

regards
Waqar

MuhammadWaqar_ul_islam · Answer

final solution for above question using AttributeQuery # sample used simplify private void SimplifyAndQueryButton_Click(object sender, RoutedEventArgs e) { GeometryService geometryService = new GeometryService("http://localhost/ArcGISSERVER/rest/services/Geometry/GeometryServer"); geometryService.SimplifyCompleted += GeometryService_SimplifyCompleted; geometryService.Failed += GeometryService_Failed; List graphicList = new List(); // graphicList.Add(_unsimplifiedGraphic); graphicList.Add(selectedFeature); geometryService.SimplifyAsync(graphicList); ResultsDisplayCanvasBuffer.Visibility = Visibility.Visible; } private void GeometryService_SimplifyCompleted(object sender, GraphicsEventArgs args) { doQuery(args.Results[0].Geometry); } private void doQuery(ESRI.ArcGIS.Client.Geometry.Geometry geometry) { QueryTask queryTaskpoint = new QueryTask("http://localhost/ArcGISSERVER/rest/services/Customer_Area/MapServer/1"); queryTaskpoint.ExecuteCompleted += QueryTaskpoint_ExecuteCompleted; queryTaskpoint.Failed += QueryTaskpoint_Failed; ESRI.ArcGIS.Client.Tasks.Query queryp = new ESRI.ArcGIS.Client.Tasks.Query() { Geometry = geometry, SpatialRelationship = SpatialRelationship.esriSpatialRelContains, OutSpatialReference = MyMap.SpatialReference, ReturnGeometry = true }; queryp.OutFields.Add("*"); queryTaskpoint.ExecuteAsync(queryp); } private void QueryTaskpoint_ExecuteCompleted(object sender, QueryEventArgs args) { if (args.FeatureSet == null) return; FeatureSet featureSet = args.FeatureSet; QueryDetailsDataGridBuffer.ItemsSource = featureSet.Features; GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer; graphicsLayer.ClearGraphics(); if (featureSet != null && featureSet.Features.Count > 0) { foreach (Graphic feature in featureSet.Features) { ESRI.ArcGIS.Client.Graphic graphic = new ESRI.ArcGIS.Client.Graphic() { Geometry = feature.Geometry, Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol }; graphicsLayer.Graphics.Add(graphic); } } // graphicsLayer.Graphics.Add(_unsimplifiedGraphic); graphicsLayer.Graphics.Add(selectedFeature); } private void GeometryService_Failed(object sender, TaskFailedEventArgs e) { MessageBox.Show("Geometry Service error: " + e.Error); } private void QueryTaskpoint_Failed(object sender, TaskFailedEventArgs e) { MessageBox.Show("Query failed: " + e.Error); } private void Selection_Change_Buffer(object sender, SelectionChangedEventArgs e) { System.Windows.Controls.DataGrid dataGrid = sender as System.Windows.Controls.DataGrid; int selectedIndex = dataGrid.SelectedIndex; if (selectedIndex > -1) { //FindResult findResult = (FindResult)QueryDetailsDataGrid.SelectedItem; //Graphic graphic = findResult.Feature; Graphic graphic = (Graphic)QueryDetailsDataGridBuffer.SelectedItem; ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = graphic.Geometry.Extent; double expandPercentage = 30; double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100); double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100); ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope( selectedFeatureExtent.XMin - (widthExpand / 2), selectedFeatureExtent.YMin - (heightExpand / 2), selectedFeatureExtent.XMax + (widthExpand / 2), selectedFeatureExtent.YMax + (heightExpand / 2)); graphic.Symbol = LayoutRoot.Resources["SelectedSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; GraphicsLayer graphicsLayer = MyMap.Layers["SelectedTableGraphicLayer"] as GraphicsLayer; // graphicsLayer.ClearGraphics(); // graphicsLayer.Graphics.Add(graphic); MyMap.PanTo(displayExtent); } }

MuhammadWaqar_ul_islam · Answer

I m trying this need help here

public MainPage()
        {
            InitializeComponent();

QueryTask queryTask = new QueryTask("http://localhost/ArcGISSERVER/rest/services/Customer_Area/MapServer/2");//polygon
            QueryTask qtponit = new QueryTask("http://localhost/ArcGISSERVER/rest/services/Customer_Area/MapServer/1"); //points
            qtponit.ExecuteCompleted += qtponit_ExecuteCompleted;
            queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted;
            queryTask.Failed += QueryTask_Failed;
            qtponit.Failed += qtponit_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();
            query.ReturnGeometry = true;
            // Specify fields to return from initial query
            query.OutFields.AddRange(new string[] { "Area_Code_" }); //polygon feild

// This query will just populate the drop-down, so no need to return geometry

// Return all features
            query.Where = "1=1";
            queryTask.ExecuteAsync(query, "initial");

ESRI.ArcGIS.Client.Tasks.Query queryPoint = new ESRI.ArcGIS.Client.Tasks.Query();
           // queryPoint.SpatialRelationship= "
         
            queryPoint.ReturnGeometry = true;
            queryPoint.SpatialRelationship = SpatialRelationship.esriSpatialRelIntersects;
           // queryPoint.OutFields.AddRange(new string[] { "Area" }); ;
            //queryPoint.Where = "1=1";
            qtponit.ExecuteAsync(queryPoint, "initial");
        }

private void cmbArea_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (comboBox1.SelectedItem.ToString().Contains("Select..."))
                return;

QueryTask queryTask = new QueryTask("http://localhost/ArcGISSERVER/rest/services/Customer_Area/MapServer/2");

queryTask.ExecuteCompleted += QueryTask_ExecuteCompleted;

queryTask.Failed += QueryTask_Failed;

ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();

query.Text = comboBox1.SelectedItem.ToString();
            query.OutSpatialReference = MyMap.SpatialReference;
            query.OutFields.Add("*");
            query.ReturnGeometry = true;
            queryTask.ExecuteAsync(query);

}
        private void QueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)
        {

// If initial query to populate states combobox
            if ((args.UserState as string) == "initial")
            {
                // Just show on initial load
                comboBox1.Items.Add("Select...");

foreach (Graphic graphic in args.FeatureSet.Features)
                {
                    comboBox1.Items.Add(graphic.Attributes["Area_Code_"].ToString());
                }

comboBox1.SelectedIndex = 0;
                return;
            }

// Remove the first entry if "Select..."
            if (comboBox1.Items[0].ToString().Contains("Select..."))
                comboBox1.Items.RemoveAt(0);
            // below  code is for select Polygon 
            // If an item has been selected            
            GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
            graphicsLayer.ClearGraphics();

FeatureSet featureSet = args.FeatureSet;
            if (featureSet != null && featureSet.Features.Count > 0)
            {
                // Show selected feature attributes in DataGrid
                Graphic selectedFeature = featureSet.Features[0];

// Hightlight selected feature
                selectedFeature.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;
                graphicsLayer.Graphics.Add(selectedFeature);

// Zoom to selected feature (define expand percentage)
                ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = selectedFeature.Geometry.Extent;

double expandPercentage = 30;

double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100);
                double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100);

ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(
                selectedFeatureExtent.XMin - (widthExpand / 2),
                selectedFeatureExtent.YMin - (heightExpand / 2),
                selectedFeatureExtent.XMax + (widthExpand / 2),
                selectedFeatureExtent.YMax + (heightExpand / 2));

MyMap.ZoomTo(displayExtent);
            }

}
        private void qtponit_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)
        {
            GraphicsLayer graphicsLayerpoint = MyMap.Layers["MyGraphicsLayerPoint"] as GraphicsLayer;
            graphicsLayerpoint.ClearGraphics();

FeatureSet featureSet = args.FeatureSet;
            if (featureSet == null || featureSet.Features.Count < 1)
            {
                MessageBox.Show("No features retured from query");
                return;
            }

if (featureSet != null && featureSet.Features.Count > 0)
            {
                foreach (Graphic feature in featureSet.Features)
                {
                    feature.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as MarkerSymbol;
                    graphicsLayerpoint.Graphics.Insert(0, feature);
                }
            
            //if (featureSet != null && featureSet.Features.Count > 0)
            //{
            //    // Show selected feature attributes in DataGrid
            //    Graphic selectedFeature = featureSet.Features[0];

//// Hightlight selected feature
                //selectedFeature.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;
                //graphicsLayerpoint.Graphics.Add(selectedFeature);
            }
        }
        private void QueryTask_Failed(object sender, TaskFailedEventArgs args)
        {
            MessageBox.Show("Query failed: " + args.Error);
        }
        private void qtponit_Failed(object sender, TaskFailedEventArgs args)
        {
            MessageBox.Show("Query failed: " + args.Error);
        }
        public Symbol DefaultFillSymbol { get; set; }

private void Click_Test(object sender, RoutedEventArgs e)
        {
// to select point inside in the selected polygon but its give erorr dont know why

QueryTask qtponit = new QueryTask("http://localhost/ArcGISSERVER/rest/services/Customer_Area/MapServer/1");
            qtponit.ExecuteCompleted += qtponit_ExecuteCompleted;
            qtponit.Failed += qtponit_Failed;
            ESRI.ArcGIS.Client.Tasks.Query queryPoint = new ESRI.ArcGIS.Client.Tasks.Query();
            queryPoint.OutSpatialReference = MyMap.SpatialReference;
            queryPoint.ReturnGeometry = true;
            queryPoint.SpatialRelationship = SpatialRelationship.esriSpatialRelIntersects; 
            queryPoint.OutFields.Add("*");
            qtponit.ExecuteAsync(queryPoint);
        }

MuhammadWaqar_ul_islam · Answer

unbale to select points inside selected polygon graphic feature
c# code required