ArcGISWindowsPhoneSDK.QueryRelatedRecords.MyMap_MouseClick C# (CSharp) Method

        void MyMap_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs e)
        {
            graphicsLayer.Graphics.Clear();
            SelectedWellsTreeView.ItemsSource = null;
            RelatedRowsDataGrid.ItemsSource = null;

            Query query = new Query()
            {
                Geometry = Expand(MyMap.Extent, e.MapPoint, 0.01),
                ReturnGeometry = true,
                OutSpatialReference = MyMap.SpatialReference
            };
            query.OutFields.Add("*");

            queryTask.ExecuteAsync(query);
        }