c# 4.0 - how to work with pagination using since_id and max_id in linqtotwitter v2.1? -

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i had used linqtotwitter fetching tweets twitter.
can pull tweets 1 shot @ time if try pull tweets using sinceid , maxid returning empty , i'm executing range dates in query. below code i'm able 100 tweets.what i'm doing wrong
thanks

my code 

var auth = new singleuserauthorizer         {             credentials = new inmemorycredentials             {                 consumerkey = "xxxxx",                 consumersecret = "xxxxx",                 oauthtoken = "xxxxx",                 accesstoken = "xxxxxxx"             }         };         var twitterctx = new twittercontext(auth);         var owntweets = new list<status>();         ulong sinceid = 0;         ulong maxid = 0;         int laststatuscount = 0;         var datefrom = datetime.now.adddays(-20);         bool flag = true;         var statusresponse = new list<status>();           statusresponse = (from tweet in twitterctx.status                               tweet.type == statustype.user                                     && tweet.screenname == screenname                                     && tweet.count == 100                                     && (tweet.createdat >= datefrom && tweet.createdat <= datetime.now)                               select tweet).tolist();          if (statusresponse.count > 0)         {             maxid = statusresponse.min(status => ulong.parse(status.statusid)) - 1;             owntweets.addrange(statusresponse);             sinceid = convert.touint64(owntweets.last().statusid);         }                 {           int ratelimitstatus = twitterctx.ratelimitremaining;           if (ratelimitstatus != 0)           {               statusresponse = (from tweet in twitterctx.status                             tweet.type == statustype.user                                   && tweet.screenname == screenname                                   && tweet.sinceid == sinceid && tweet.maxid == maxid                                   && tweet.count == 100                                   && (tweet.createdat >= datefrom && tweet.createdat <= datetime.now)                             select tweet).tolist();                           laststatuscount = statusresponse.count;                          if (laststatuscount != 0)                         {                             maxid = statusresponse.min(status => ulong.parse(status.statusid)) - 1;                              owntweets.addrange(statusresponse);                         }                         else                         {                             flag = false;                         }             }             else             {                 flag = false;             }          }         while (flag);

you can fix changing how initialize sinceid, represents oldest tweet retrieve. remember, you're working backwards through list, until reach sinceid.

  1. create field sinceid in data store, associated user represented screenname (or userid).
  2. initialize field 1. don't set 0, because tweet id #0 doesn't exist , twitter return error.
  3. in code, initialize sinceid value data store user, 1 first time through.
  4. remove other changes sinceid in code, including 1 inside if (statusresponse.count > 0) block.
  5. when algorithm complete, use line removed if block next sinceid should be.
  6. save value of sinceid in data store user can read again next time run algorithm user.

for more info, please visit blog post working timelines linq twitter.


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