How to Print Html output in Asp.net

protected void Button1_Click(object sender, EventArgs e)
{
   try
   {
     try
     {
       // print the document using PrintDocument
       PrintDocument doctoprint = new PrintDocument();
       doctoprint.PrintPage += new  PrintPageEventHandler(document_PrintPage);
       doctoprint.Print();               
     }
     finally
     {
       stream.Close();
     }
   }
   catch (Exception ex)
   {
     Response.Write(ex.Message);

   }      
}

//Event handle  to print html 
private void document_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
   float yPos = 0;
   float leftMargin = e.MarginBounds.Left;
   float topMargin = e.MarginBounds.Top;
   string line = null;
   Font printFont = new Font("Arial", 10);
   Byte[] buffer = null;
 
   //buffer = StreamFile(@"C:\\Documents and Settings\\sweta.rani\\Desktop\\2008-03-12_osam_pr.pdf");
   buffer = StreamFile(@"C:\\Documents and Settings\\sweta.rani\\Desktop\\A.html");
   if (buffer != null)
   {
     Response.ContentType = "text/html";
     Response.AddHeader("content-length", buffer.Length.ToString());
     Response.BinaryWrite(buffer);
            
     line = Encoding.ASCII.GetString(buffer);
     e.Graphics.DrawString(line, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());         
     Response.End();
   }     
}