Gymnastika.Common.Navigation.NavigationService.EnsureRegion C# (CSharp) Méthode

        private INavigationRegion EnsureRegion(string regionName)
        {
            INavigationRegion region = _navigationManager.Regions[regionName];

            if (region == null)
            {
                throw new InvalidOperationException(
                    string.Format("Navigation Region [{0}] does not exist"));
            }

            return region;
        }