static void Main(string[] args) { var hashTable = new HashTable(); hashTable.AddValue("123"); Console.WriteLine("hashTable.AddValue(\"123\")"); Console.WriteLine($"hashTable.Contains(\"123\"): {hashTable.Contains("123")}"); Console.WriteLine(); hashTable.DeleteValue("123"); Console.WriteLine("hashTable.DeleteValue(\"123\")"); Console.WriteLine($"hashTable.Contains(\"123\"): {hashTable.Contains("123")}"); Console.WriteLine(); hashTable.AddValue("123"); Console.WriteLine("hashTable.AddValue(\"123\")"); hashTable.Clear(); Console.WriteLine("hashTable.Clear()"); Console.WriteLine($"hashTable.Contains(\"123\"): {hashTable.Contains("123")}"); }