private void Button_Click(object sender, System.Windows.RoutedEventArgs e) { FeatureLayer layer = new FeatureLayer() { Url = "http://serverapps.esri.com/ArcGIS/rest/services/California/MapServer/8" }; layer.OutFields.Add("*"); MyMap.Layers.Add(layer); MyDataGrid.Map = MyMap; MyDataGrid.GraphicsLayer = layer; }