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OneDrive에 파일을 업로드하려고했습니다. 나는 성공적으로 연결하고 원 드라이브에 인증 만 업로드 할 때, 나는 오류 얻을 해요 : Object reference not set to an instance of an object.BackgroundUploadAsync 인스턴스에 오류 개체가 설정되지 않았습니다.
코드는 다음과 같습니다
IsolatedStorageFile iso = IsolatedStorageFile.GetUserStoreForApplication();
// Release all resources from DB
App.AppViewModel.DisposeCurrentDB();
IsolatedStorageFileStream toUploadStream = iso.OpenFile(AppResources.DatabaseName + ".sdf", FileMode.Open);
LiveConnectClient liveClient = new LiveConnectClient(oneDriveAuthClient.Session);
try
{
LiveOperationResult uploadResult = await liveClient.BackgroundUploadAsync(
oneDriveFolderId,
DatabaseBackupname,
toUploadStream.AsInputStream(),
OverwriteOption.Overwrite);
dynamic result = uploadResult.Result;
MessageBox.Show("Upload successful. Uploaded to " + result.source);
}
catch (LiveConnectException ex)
{
MessageBox.Show("Error uploading backup: " + ex.Message);
}
App.AppViewModel.RefreshCurrentDB();
BackgroundUploadAysnc 방법은 예외가 발생합니다. oneDriveFolderId이 설정되어 OneDrive에 있습니다. DatabaseBackupname은 OneDrive에없는 올바른 새 파일 이름입니다. 디버거에서 스트림을 검사했고이 객체는 비어 있지 않았고 크기가있었습니다.
Stacktrace
at Microsoft.Live.Operations.TailoredUploadOperation.<OnGetUploadLinkCompleted>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__4(Object state)
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()
나는 이것에 업로드 코드 변경 :
LiveUploadOperation operation = await liveClient.CreateBackgroundUploadAsync(
oneDriveFolderId,
DatabaseBackupname,
toUploadStream,
OverwriteOption.DoNotOverwrite);
await operation.StartAsync();
을하고 CreateBackgroundUploadAsync 방법은 다음과 같은 예외가 발생합니다 : 그것은 정말 오류 메시지에 대한 해결책이 아니다
Message = "Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"
at Windows.Networking.BackgroundTransfer.BackgroundUploader.CreateUploadFromStreamAsync(Uri uri, IInputStream sourceStream)
at Microsoft.Live.Operations.CreateBackgroundUploadOperation.<OnGetUploadLinkCompleted>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__4(Object state)
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()