Objective : I need to use IIS and Indexing service to extract text out
of documents (mostly office docs, html, rtf, etc which are by default
supported by indexing service)


Tools : Solution should be using asp.net

Don'ts : Please do not use any third party or office  filter solution.
Office is not supposed to be installed on server.

Expected : Lead me to a sample code which does this

using System;
using System.IO;

public void test()
{
StreamReader sr;
string inputFile="file1.doc";
string outFile ="file2.doc";
try
 {
  sr = new StreamReader(inputFile);				
  StreamWriter sw = new StreamWriter(outFile);
  String line;
  while ((line = sr.ReadLine()) != null) 
 {
   // if you need to filter, just check the line for its context
   sw.WriteLine(line); 
 }
sr.Close();
sw.Flush();
sw.Close();
}
catch (Exception e){Console.WriteLine(e.Message + ", " + e.StackTrace);}
}