Praeclarum.UI.DocumentsViewController.GetModifiedTimeAsync C# (CSharp) 메소드

		static async Task<Tuple<IFile, DateTime>> GetModifiedTimeAsync (IFile file)
		{
			var mt = DateTime.MinValue;

			if (file.IsDirectory) {

				var files = await FileSystemManager.Shared.ActiveFileSystem.ListFiles (file.Path);
				var q = from f in files
				        where !f.IsDirectory
				        select f.ModifiedTime;
				try {
					mt = q.Max ();
				} catch {
				}

			} else {
				mt = file.ModifiedTime;
			}

			return Tuple.Create (file, mt);
		}