Address locator issue in search result envelope zooming

shariqueabdul

Hi All

I m getting null exception error in this following code

Private Sub QueryTaskZoomSearch_ExecuteCompleted(ByVal sender As Object, ByVal args As ESRI.ArcGIS.Client.Tasks.QueryEventArgs)
        Dim featureSet1 As FeatureSet = args.FeatureSet

         
        Dim graphicsLayer As GraphicsLayer = TryCast(MyMap.Layers("MyGraphicsLayer"), GraphicsLayer)
        graphicsLayer.ClearGraphics()

        If featureSet1 IsNot Nothing AndAlso featureSet1.Features.Count > 0 Then
           
           
            Dim selectedFeature As Graphic = New Graphic
            selectedFeature = featureSet1.Features(1)
           

            Select Case featureSet1.GeometryType
                Case GeometryType.Point : selectedFeature.Symbol = DefaultMarkerSymbol
                Case GeometryType.Polygon : selectedFeature.Symbol = DefaultFillSymbol
                Case GeometryType.Polyline : selectedFeature.Symbol = DefaultLineSymbol
                Case GeometryType.Envelope : selectedFeature.Symbol = DefaultMarkerSymbol   // here it shows nothing in envelope
            End Select
            'selectedFeature.Symbol = DefaultFillSymbol

            graphicsLayer.Graphics.Add(selectedFeature)

            ' Zoom to selected feature (define expand percentage)
            Dim selectedFeatureExtent As ESRI.ArcGIS.Client.Geometry.Envelope = selectedFeature.Geometry.Extent


getting error in underline text .... object refernce is not set to an instance of an object

plz help

DominiqueBroux

May be your featureset has only one feature so you should use

selectedFeature = featureSet1.Features(0)