``` Exporter.exportAsExcel(grid)); Exporter.exportAsCSV(grid)) ``` A typical use case is to let user download the generated file, an Anchor component can be used for such a purpose. Vaadin 10+ ``` new Anchor(new StreamResource("my-excel.xlsx", Exporter.exportAsExcel(grid)), "Download As Excel"); ``` Vaadin 8 ``` Button downloadAsExcel = new Button("Download As Excel"); StreamResource excelStreamResource = new StreamResource((StreamResource.StreamSource) () -> Exporter.exportAsExcel(grid), "my-excel.xlsx"); FileDownloader excelFileDownloader = new FileDownloader(excelStreamResource); excelFileDownloader.extend(downloadAsExcel); ``` ## Use instructions Each to be exported column should have a key, and the key should be a property name. A key will be generated automatically if you are also passing the class in the Grid constructor parameter, e.g. ``` Grid grid = new Grid<>(Person.class); ``` Otherwise, you need to set the key manually. e.g. ``` Grid grid = new Grid<>(); grid.addColumn(Person::getEmail).setKey("email"); ``` Exporter works as using reflection to read property from each item, a column without a valid key will be ignored. Exporter 1 for Vaadin 7 works a bit differently. It's a Vaadin Button to download the exported files and it's based on Vaadin Container. Code Example on how to use Exporter 1 ``` ExcelExporter excelExporter = new ExcelExporter(); excelExporter.setDateFormat("yyyy-MM-dd"); excelExporter.setTableToBeExported(sampleTable); excelExporter.setCaption("Export to Excel"); layout.addComponent(excelExporter); ```