To enable export in the DataGrid, reference or import the ExcelJS and FileSaver libraries. Set export.enabled to true.
Once the conditions above are met, use the exportDataGrid(options) method to export the DataGrid to an Excel workbook.
Review the onExporting handler to see the data export code. DataGrid is exported as is to a single worksheet. You can also set allowExportSelectedData to true to export only selected rows.
You can export DataGrid to CSV. Call the exportDataGrid(options) method as shown in the following ticket: Export PivotGrid into CSV file.