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我在打开 Dropbox 文件夹时遇到问题。它是一个生成exe的代码。基本上，当 exe 执行时，它会开始下载存储在 dropbox 文件夹中的包。这是我的代码：

    _storage = new CloudStorage();

    var dropBoxCredentials = new DropBoxCredentials();

    dropBoxCredentials.ConsumerKey = "xxxxxxxxxxxxxxx";
    dropBoxCredentials.ConsumerSecret = "xxxxxxxxxxxxxxx";

    dropBoxCredentials.UserName = "someusername";
    dropBoxCredentials.Password = "somepassword";

    DropBoxConfiguration configuration = DropBoxConfiguration.GetStandardConfiguration();

    //open the dropbox connection
    _storage.Open(configuration, dropBoxCredentials);

很抱歉，我必须隐藏机密信息，但我认为它们是正确的。所以问题发生在_storage.Open(configuration, dropBoxCredentials);它说：！[在此处输入图像描述][1]

我检查了“ configuration”和“ dropBoxCredentials”，它们不是Null，“ _storage”也是如此。所以我很困惑，这里到底有什么问题？非常感谢。

编辑; 这是堆栈跟踪：

at AppLimit.CloudComputing.SharpBox.StorageProvider.DropBox.DropBoxToken..ctor(OAuthToken token, DropBoxBaseCredentials baseCreds)
at AppLimit.CloudComputing.SharpBox.StorageProvider.DropBox.Logic.DropBoxStorageProviderService.AuthorizeAndGetSession(DropBoxCredentials credentials, DropBoxConfiguration configuration)
at AppLimit.CloudComputing.SharpBox.StorageProvider.DropBox.Logic.DropBoxStorageProviderService.Authorize(DropBoxCredentials credentials, DropBoxConfiguration configuration)
at AppLimit.CloudComputing.SharpBox.StorageProvider.DropBox.Logic.DropBoxStorageProviderService.CreateSession(ICloudStorageCredentials credentials, ICloudStorageConfiguration configuration)
at AppLimit.CloudComputing.SharpBox.StorageProvider.GenericStorageProvider.Open(ICloudStorageConfiguration configuration, ICloudStorageCredentials credentials)
at AppLimit.CloudComputing.SharpBox.CloudStorage.Open(ICloudStorageConfiguration configuration, ICloudStorageCredentials credentials)
at WebUpdater.Program.Main(String[] args) in C:\\TIS\\Tools\\WebUpdater\\WebUpdater\\Program.cs:line 52
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
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1 回答 1

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堆栈跟踪显示异常源自 SharpBox 程序集内部。

ANullReferenceException总是表示某种错误，因此您应该考虑在 SharpBox 网站上创建问题。

于 2013-05-02T14:46:57.597 回答