c# 3.0 - Could not authenticate with OAuth -

i using tweetsharp , trying play twitter application. @ present simple console application.

i have searched in net , found articles of them stating after august 16th 2010, basic authentication twitter no longer applicable. instead oauth has come place.

henceforth, have gone twitter apps , created 1 me.(since it's desktop application, choose application type client , not browser.)

these various information got

consumer key :  nxdgjunklu65cw38ea1rt   consumer secret :joomsrgpthct9hfjgqotpxsczwi5k8zkipoc1ytfo   request token url : https://twitter.com/oauth/request_token  access token url :  https://twitter.com/oauth/access_token  authorize url:  https://twitter.com/oauth/authorize 

as basic step have planned that, write/post tweet wall.

henceforth, made following(some code has been taken web using reference)

string consumerkey = "nxdgjunklu65cw38ea1rt"; string consumersecret = "joomsrgpthct9hfjgqotpxsczwi5k8zkipoc1ytfo";  fluenttwitter.setclientinfo(new twitterclientinfo { consumerkey = consumerkey, consumersecret = consumersecret });  //gets token var requesttoken = fluenttwitter.createrequest().authentication.getrequesttoken().request().astoken();  var twitter = fluenttwitter.createrequest()                         .authenticatewith(                         consumerkey                         ,consumersecret,                         requesttoken.token,                         requesttoken.tokensecret)                         .statuses().update("i writing first tweets").asxml(); var response = twitter.request(); var status = response.asstatus(); 

but response is

<?xml version="1.0" encoding="utf-8"?> <hash>   <error>could not authenticate oauth.</error>   <request>/1/statuses/update.xml</request> </hash> 

i trying long time understand problem in vain.

i need help.

thanks

getting request token first step of oauth process. need request token, authorize token, , trade if access token. use access token send tweet.

see link flowchart of full oauth process.