How to add page numbers to the exported pdf in WinForms DataGrid?

PdfExportingOptions options = new PdfExportingOptions();
options.RepeatHeaders = true;
options.ExportGroupSummary = true;
options.ExportFormat = true;
options.FitAllColumnsInOnePage = false;
options.ExportTableSummary = true;
 
//Set document information.
Syncfusion.Pdf.PdfDocument document = new Syncfusion.Pdf.PdfDocument();
 
RectangleF bounds = new RectangleF(0, 10, document.Pages[0].GetClientSize().Width, 50);
PdfPageTemplateElement footer = new PdfPageTemplateElement(bounds);
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 7);
PdfBrush brush = new PdfSolidBrush(Color.Black);
 
//Create page number field.
PdfPageNumberField pageNumber = new PdfPageNumberField(font, brush);
 
//Add the fields in composite fields.
PdfCompositeField compositeField = new PdfCompositeField(font, brush, "{0}", pageNumber);
compositeField.Bounds = footer.Bounds;
 
//Draw the composite field in footer.
compositeField.Draw(footer.Graphics, new PointF(250, 40));
 
//Add the footer template at the bottom.
document.Template.Bottom = footer;
 
var pdfGrid = sfDataGrid1.ExportToPdfGrid(sfDataGrid1.View, options);
pdfGrid.Draw(page, new PointF());

Dim options As New PdfExportingOptions()
options.RepeatHeaders = True
options.ExportGroupSummary = True
options.ExportFormat = True
options.FitAllColumnsInOnePage = False
options.ExportTableSummary = True
 
'Set document information.
Dim document As New Syncfusion.Pdf.PdfDocument()
 
Dim page = document.Pages.Add()
 
Dim bounds As New RectangleF(0, 10, document.Pages(0).GetClientSize().Width, 50)
Dim footer As New PdfPageTemplateElement(bounds)
Dim font As PdfFont = New PdfStandardFont(PdfFontFamily.Helvetica, 7)
Dim brush As PdfBrush = New PdfSolidBrush(Color.Black)
 
'Create page number field.
Dim pageNumber As New PdfPageNumberField(font, brush)
 
'Add the fields in composite fields.
Dim compositeField As New PdfCompositeField(font, brush, "{0}", pageNumber)
compositeField.Bounds = footer.Bounds
 
'Draw the composite field in footer.
compositeField.Draw(footer.Graphics, New PointF(250, 40))
 
'Add the footer template at the bottom.
document.Template.Bottom = footer
Dim pdfGrid = sfDataGrid1.ExportToPdfGrid(sfDataGrid1.View, options)
pdfGrid.Draw(page, New PointF())