convert word Document to pdf using c#

Question

Here i have tried so many codings  for convert word Document to Pdf but not working properly (alginment issue)here i mentioned  the code below,

 

//Read the Data from Input File

StreamReader rdr = new StreamReader(txtInput.Text);

//Create a New instance on Document Class

Document doc = new Document();

//Create a New instance of PDFWriter Class for Output File

PdfWriter.GetInstance(doc, new FileStream(txtOutput.Text, FileMode.Create));

//Open the Document

doc.Open();

//Add the content of Text File to PDF File

doc.Add(new Paragraph(rdr.ReadToEnd()));

//Close the Document

doc.Close();

MessageBox.Show("Conversion Successful....");

//Open the Converted PDF File

System.Diagnostics.Process.Start(txtOutput.Text);

 

Kindly suggest some other code without using API and if possible Kindly correct the mistake in my code for alignment issue