OutOfMemoryException
   於 System.Text.StringBuilder.ToString()
   於 IntelliTools.Domain.Service.DataWrapper.ToString()
   於 IntelliTools.Domain.AppState.Save()
   於 IntelliTools.Domain.Service.DataService.SaveSomeData(Object sender, EventArgs e)
   於 System.Windows.Threading.DispatcherTimer.FireTick(Object unused)
   於 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   於 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)