// Create empty project and set calculation mode to None
System::SharedPtr<Project> project = System::MakeObject<Project>();
project->set_CalculationMode(Aspose::Tasks::CalculationMode::None);
    
// Add a new task
System::SharedPtr<Task> task = project->get_RootTask()->get_Children()->Add(u"Task");
    
// Note that even ids were not calculated            
System::Console::WriteLine(u"Task.Id Equals 0 : {0} ", System::ObjectExt::Box<bool>(System::Equals(task->Get<int32_t>(Tsk::Id()), 0)));
System::Console::WriteLine(u"Task.OutlineLevel Equals 0 : {0} ", System::ObjectExt::Box<bool>(System::Equals(task->Get<int32_t>(Tsk::OutlineLevel()), 0)));
System::Console::WriteLine(u"Task Start Equals DateTime.MinValue : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(task->Get<System::DateTime>(Tsk::Start()), System::DateTime::MinValue)));
System::Console::WriteLine(u"Task Finish Equals DateTime.MinValue : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(task->Get<System::DateTime>(Tsk::Finish()), System::DateTime::MinValue)));
System::Console::WriteLine(u"Task Duration Equals 0 mins : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(System::ObjectExt::ToString(task->Get<Duration>(Tsk::Duration())), u"0 mins")));
    
// Set duration property
task->Set<Duration>(Tsk::Duration(), project->GetDuration(2, Aspose::Tasks::TimeUnitType::Day));
System::Console::WriteLine(u"Task Duration Equals 2 days : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(System::ObjectExt::ToString(task->Get<Duration>(Tsk::Duration())), u"2 days")));
System::Console::WriteLine(u"Task Start Equals DateTime.MinValue  : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(task->Get<System::DateTime>(Tsk::Start()), System::DateTime::MinValue)));
System::Console::WriteLine(u"Task Finish Equals DateTime.MinValue  : {0} ", System::ObjectExt::Box<bool>(System::ObjectExt::Equals(task->Get<System::DateTime>(Tsk::Finish()), System::DateTime::MinValue)));