using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication1 { struct haha { public int numbers; public string key_name; } class Program { static void Main(string[] args) { haha box; box.numbers = 123; box.key_name = "name"; Console.WriteLine("{0} -- {1}",box.key_name,box.numbers); } } }