How to create PDF document with underline text using C# and VB.NET?

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using System.Drawing;

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics
Imports System.Drawing

//Create a new PDF document
PdfDocument document = new PdfDocument();
 
//Add a page to the document
PdfPage page = document.Pages.Add();
 
//Create PDF graphics for the page
PdfGraphics graphics = page.Graphics;
 
//Set the standard font with font style as underline 
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 20, PdfFontStyle.Underline);
 
//Draw the text 
graphics.DrawString("Hello World!!!", font, PdfBrushes.Black, new PointF(0, 0));
 
//Save the document
document.Save("Output.pdf");
 
//Close the document
document.Close(true);
 
//This will open the PDF file so, the result will be seen in default PDF Viewer
Process.Start("Output.pdf");

'Create a new PDF document 
Dim document As PdfDocument = New PdfDocument()
 
'Add a page to the document 
Dim page As PdfPage = document.Pages.Add()
 
'Create PDF graphics for the page 
Dim graphics As PdfGraphics = page.Graphics
 
'Set the standard font with font style as underline  
Dim font As PdfFont = New PdfStandardFont(PdfFontFamily.Helvetica, 20, PdfFontStyle.Underline)
 
'Draw the text  
graphics.DrawString("Hello World!!!", font, PdfBrushes.Black, New PointF(0, 0))
 
'Save the document 
document.Save("Output.pdf")
 
'Close the document 
document.Close(True)
 
'This will open the PDF file so, the result will be seen in default PDF Viewer 
Process.Start("Output.pdf")