How to insert a List<> into a constructor?

Question

I wanted to create a class constructor that Telefono as a parameter a string to insert into a list

The compiler I reports the error: "cannot implicitly convert to void a string"

How can I fix?

 public static class Telefono
    {
        public double LevelBattery { get; set; }
        public List<String> NomeTelefono { get; set; }
        public bool TelefonoON { get; set; }

        public Telefono(string telefono)
        {
            telefono = NomeTelefono.Add(telefono); //ERROR!!!!
        }

        public void ON()
        {
            Random x = new Random();
            int Batt = x.Next(100);
            LevelBatty = Batt;

            if (Levelbattery > 10)
                TelefonoON = true;
            else
            {
                Console.WriteLine("Ricaricare subito il telefono {0}. Batteria inferiore al 10%", NomeTelefono);
                Console.ReadLine();
                TelefonoON = false;
            }

        }

*That* error seems unrelated to your string insertion. Are you sure its complaining about that line? You will get a NRE runtime error though (you need to instantiate the list). — BradleyDotNET, Nov 11 '14 at 18:41

score 7 · Answer 1 · answered Nov 11 '14 at 18:41

7

List<T>.Add doesn't return anything. I think you just want to initialize your list and add the item:

public Telefono(string telefono)
{
    NoneTelefono = new List<string>();
    NomeTelefono.Add(telefono);
}

answered Nov 11 '14 at 18:41

Selman Genç

100,147
13
119
184

Good catch! I missed the assignment in the add. – BradleyDotNET Nov 11 '14 at 18:42

score 0 · Answer 2 · answered Nov 11 '14 at 18:42

0

you need to add

NomeTelefono = new List<string>();

in the constructor

answered Nov 11 '14 at 18:42

Z .

12,657
1
31
56

How to insert a List<> into a constructor?

2 Answers2