public static class Demo
        {
            public const string Complete = "Complete";
            public const string Active = "Active";
            public const string Current = "Current"; 
        }

and I want to have a property that will present an occurrence of this static class in another class DemoImplement.

    public class DemoImplement
        {
            public string Code { get; set; }
            public string Title { get; set; }
            public string  Status { get; set; }
            public string Category { get; set; }
        }