server.js

var express = require('express')
  , http = require('http')
  , path = require('path');

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');
  app.use(express.favicon());
  app.use(express.logger('dev'));
  app.use(express.bodyParser({ 
    keepExtensions: true, 
    uploadDir: __dirname + '/tmp',
    limit: '2mb'
  }));
  app.use(express.methodOverride());
  app.use(app.router);
  app.use(express.static(path.join(__dirname, 'public')));
});

app.configure('development', function(){
  app.use(express.errorHandler());
});

// Routes

app.get('/', function(req, res) {
  res.render('index');
});

app.post('/', function(req, res) {

  res.end();
});

app.get("/files",function(req,res){
	var fs = require('fs');
fs.readdir('C:\\Users\\S.Shivasurya\\Documents\\node\\expressapp\\tmp\\', function (err, files) {
 if (err)
    throw err;
var result=new Array();
 for (var index in files) {
 	if(fs.lstatSync("C:\\Users\\S.Shivasurya\\Documents\\node\\expressapp\\tmp\\"+files[index]).isFile())
    result[index]=files[index];
 }

 res.render("files",{ result:result,'title':'Files in Drive' });
 });

});
// Start the app
app.post("/download",function(req,res){
	var name=req.body.file;
		var d="C:\\Users\\S.Shivasurya\\Documents\\node\\expressapp\\tmp\\";
		res.download(d+name);
})
http.createServer(app).listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});