IOException 在 System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) 在 System.IO.FileStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count) 在 System.IO.FileStream.FlushInternalBuffer() 在 System.IO.FileStream.Flush(Boolean flushToDisk) 在 System.Windows.Media.Imaging.BitmapDownload.ReadCallback(IAsyncResult result) 在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 在 System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem() 在 System.Threading.ThreadPoolWorkQueue.Dispatch()