Thanks for considering Aspose.
Please try using the following code snippet to accomplish your requirment.
//Instantiate a pdf document
Pdf pdf1 = new Pdf();
//Create a section in the pdf document
Aspose.Pdf.Section sec1 = pdf1.Sections.Add();
//Create string variables with text containing html tags
string s = "" + "This is a test for ARIAL </ Font support " + "
in Text paragraph. ";
string s2 = "
This is a test for" + " Verdana in text paragraph.
//Create text paragraphs containing HTML text
Text t1 = new Text(s);
t1.IsHtmlTagSupported = true;
Text t2 = new Text(s2);
t2.IsHtmlTagSupported = true;
//Add the text paragraphs containing HTML text to the section
//Save the pdf document