Export to excel paged SfDataGrid

Hi,
I have problem regarding exporting paged SfDataGrid to excel using Xamarin.Android . I have created SfDataPager and set it's source to my IEnumerable<>, then I assigned SfDataGrid items source to SfDataPagers pagedSource and it all works fine. But when I export sfDataGrid to excel, I get just the current sfDataGrid page in file.xlsx. How can I get whole sfDataGrid in exported file (all pages)? (e.g. SfDataGrid for WinRT has exportOption.ExportAllPages). Thanks in advance. Here is my code below:

                DataGridExcelExportingController excelExport = new DataGridExcelExportingController();
               
                DataGridExcelExportingOption exportOption = new DataGridExcelExportingOption();
                exportOption.ExportHeader = true;
                exportOption.ExportRowHeight = false;
                exportOption.DefaultRowHeight = 30;
                exportOption.ExportColumnWidth = false;
                exportOption.DefaultColumnWidth = 150;
                exportOption.ExportGroups = true;
               
                var excelEngine = excelExport.ExportToExcel(sfDataGrid, exportOption);
                var workbook = excelEngine.Excel.Workbooks[0];
                MemoryStream stream = new MemoryStream();
                workbook.SaveAs(stream);
                workbook.Close();
                excelEngine.Dispose();
                //Save("DataGrid.xlsx", "application/msexcel", stream, sfDataGrid.Context);
                Save("DataGrid.xlsx", "application/msexcel", stream, sfDataGrid.Context);