ms word - Import doc and docx files in .Net and C# -

i'm writing text editor , want add possibility import .doc , .docx files. know use ole automation, if use recent ole library, won't work people older version of word, , if instead use older version, won't able read .docx files. ideas? thanks

edit: solution that, application works html , rtf, convert .doc , .docx files command line 1 of these formats, this: http://www.snee.com/bobdc.blog/ 2007/09/using-word-for-command-line-co.html

it's works office 2003 pia, tested in computer running office 2010:

using system.io; using system.reflection; using microsoft.office.interop.word;  public string gethtmlfromdoc(string path)     var wordapp = new application {visible = false};  //cargar documento             object srcpath = path;             var worddoc = wordapp.documents.open(ref srcpath);              //guardarlo en html             string destpath = path.combine(path.gettemppath(), "word" + (new random().next()) + ".html");             if (worddoc != null)             {                 object odestpath = destpath;                 object exportformat = wdsaveformat.wdformathtml;                 worddoc.saveas(ref odestpath, ref exportformat);             }              //cerrar             worddoc.close();             wordapp.quit();              //comprobar que el archivo existe);             if (file.exists(destpath))             {                return file.readalltext(destpath, encoding.default); } return null; }