private static void AddStep(Project p) { if (p.ModuleConfiguration.InstallSteps == null) { p.ModuleConfiguration.InstallSteps = StepList.Create(); } if (p.ModuleConfiguration.InstallSteps.InstallStep == null) { p.ModuleConfiguration.InstallSteps.InstallStep = new ObservableCollection <InstallStep>(); } p.ModuleConfiguration.InstallSteps.InstallStep.Add(InstallStep.Create()); }