How we can Applay GetHashCode function on object value ?

class Employ 
    {
        public string name { get; set; }
        public override bool Equals(object obj)
        {
            return (this.name == ((Employ)obj).name);
        }
        public override int GetHashCode()
        {
            return name.GetHashCode();
        }
    }
    class Manger
    {
        public string name { get; set; }
        public override bool Equals(object obj)
        {
            return (this.name == ((Manger)obj).name);
        }
        public override int GetHashCode()
        {
            return name.GetHashCode();
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Hashtable HT = new Hashtable();
            HT.Add(new Manger { name = "name1" }, new Employ { name = "name2" });
            HT.Add(new Manger { name = "name01" }, new Employ { name = "name2" });

        }
    }