在 System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   在 System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   在 System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
   在 System.IO.File.OpenFile(String path, FileAccess access, SafeFileHandle& handle)
   在 System.IO.File.SetCreationTimeUtc(String path, DateTime creationTimeUtc)
   在 System.Configuration.Internal.WriteFileContext.DuplicateFileAttributes(String source, String destination)
   在 System.Configuration.Internal.WriteFileContext.Complete(String filename, Boolean success)
   在 System.Configuration.Internal.InternalConfigHost.StaticWriteCompleted(String streamName, Boolean success, Object writeContext, Boolean assertPermissions)
   在 System.Configuration.ClientSettingsStore.ClientSettingsConfigurationHost.WriteCompleted(String streamName, Boolean success, Object writeContext)
   在 System.Configuration.UpdateConfigHost.WriteCompleted(String streamName, Boolean success, Object writeContext)
   在 System.Configuration.MgmtConfigurationRecord.SaveAs(String filename, ConfigurationSaveMode saveMode, Boolean forceUpdateAll)
   在 System.Configuration.ClientSettingsStore.WriteSettings(String sectionName, Boolean isRoaming, IDictionary newSettings)
   在 System.Configuration.LocalFileSettingsProvider.SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection values)
   在 System.Configuration.SettingsBase.SaveCore()
   在 System.Configuration.SettingsBase.Save()
   在 System.Configuration.ApplicationSettingsBase.Save()
   在 Quicker.App.PrepareLocalConfig()
   在 Quicker.App.<StartupApplicationAsync>d__7.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---
   在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   在 Quicker.App.<ApplicationStart>d__5.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---
   在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   在 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   在 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)