function CustomToolbar() {
return (
<GridToolbarContainer>
<GridToolbarExport
csvOptions={{ fileName: 'custom file name' }}
/>
...
</GridToolbarContainer>
)
}
<DataGrid
rows={rows}
columns={columns}
components={{
Toolbar: CustomToolbar,
...
}}
...
/>
참조
https://mui.com/x/api/data-grid/grid-csv-export-options/#properties