static void Main(string[] args) { HashTable<string, int> people = new HashTable<string, int>(); people.Add("gosho", 14); people.Add("tosho", 15); people.Add("pesho", 16); people.Add("ivan", 20); people.Add("stoqn", 40); Console.WriteLine("Count {0}", people.Count); Console.WriteLine("Gosho is {0} years old.", people["gosho"]); people.Remove("gosho"); Console.WriteLine("Count {0}", people.Count); Console.WriteLine(people.Contain("gosho")); }