我正在使用 Daniel Crenna 的 TweetSharp http://github.com/danielcrenna/tweetsharp
要将 TwitterStatus 序列化为文件，我使用代码
sw.WriteLine(JsonConvert.SerializeObject(twitterStatus));
产生文本
{"Id":288653019971727360,"InReplyToUserId":null,"InReplyToStatusId":null,"InReplyToScreenName":null,"truncated":false,"favorited":false,"Text":"Found the bug, dear old regular expressions","Source":"web","User":{"Id":1148081,"FollowersCount":793,"Name":"Tim Regan","Description": [...]
（注意，我不会全部包括在内，除非这有助于诊断？）
我反序列化 TwitterStatus 的代码行是
var tweet = (TwitterStatus)JsonConvert.DeserializeObject(line);
但这给出了错误
System.InvalidCastException was unhandled
HResult=-2147467262
Message=Unable to cast object of type 'Newtonsoft.Json.Linq.JObject' to type 'TweetSharp.TwitterStatus'.
Source=TweetColorMVVM
StackTrace:
at TweetColorMVVM.Model.Tweets.LoadSavedTweets(String screenName) in c:\TFSCML\Users\Tim\MSR.Makefest\TwitterColor\TweetColorMVVM\Model\Tweets.cs:line 132
at TweetColorMVVM.Model.Tweets.LoadTweets(Object state) in c:\TFSCML\Users\Tim\MSR.Makefest\TwitterColor\TweetColorMVVM\Model\Tweets.cs:line 78
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
谁能看到我做错了什么？