How to get the height of a PdfGrid?

// Create a new document.
PdfDocument doc = new PdfDocument();
// Add a page
PdfPage page = doc.Pages.Add();
// Create Pdf graphics for the page
PdfGraphics graphics = page.Graphics;
PdfGrid pdfGrid = new PdfGrid();
DataTable table = CreateDataTable();
// Assign data source.
pdfGrid.DataSource = table;
// Calculate the PdfGridTable height 
float gridHeight = 0.0f;
gridHeight = CalculateGridHeight(pdfGrid);       
// Draws grid to the page of the PDF document.
pdfGrid.Draw(page, new PointF(10, 10));
// Saves the document.
doc.Save("Output.pdf");
doc.Close(true);
// Method used for calculating PdfGrid height
public float CalculateGridHeight(PdfGrid pdfGrid)
{
  // Create a new document.
  PdfDocument doc = new PdfDocument();
  // Add a page
  PdfPage page = doc.Pages.Add();
  // Create Pdf graphics for the page
  PdfGraphics graphics = page.Graphics;
  // Draw the table
  PdfLayoutResult result = pdfGrid.Draw(page, new PointF(0, 0));
  float height = result.Bounds.Height;
  // Close the document
  doc.Close();    
  return height;            
}