ArcGISRuntime.Samples.Desktop.Pages.FilterFeatureLayer.filterButton_Click C# (CSharp) Method

        private async void filterButton_Click(object sender, RoutedEventArgs e)
        {
            //既存のグラフィックスを削除
            _graphicsLayer.GraphicsSource = null;

            //フィーチャを表示
            var features = await _gdbTable.QueryAsync(new QueryFilter() { WhereClause = GetFilterTest() });
            _graphicsLayer.GraphicsSource = features.Select(f => new Graphic(f.Geometry));
        }