C# add actives to another list

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Hello i have one class called Animal.cs and in my Program.cs i have created some animals..

class Program
    {
        static void Main(string[] args)
        {
            var AnimalList = new AnimslList();
        animalList.Add(new Animal{ Active = true, Name = "Bob", Photo = "Espanha" });
        animalList.Add(new Animal { Active = false, Name = "Robby", Photo = "Portugal" });
        animalList.Add(new Animal { Active = true, Name = "Snoop", Photo = "UK" });
        }
     }

and i have one class AnimalList.cs and in that class i added Animal list, and im getting the active animals with this code:

class AnimalList : List<Animal>
{
    public List<Animal> GetActiveAnimals()
    {
        return this.FindAll(p => p.Active);
    }
}

and my problem is in this class he called Event.cs in event.cs i want get the results from GetActiveAnimals() because i just want to get the active animals for the event can someone help me please?

class Event
    {
        private AnimalList _contestants;
    }

i should get the Active from the AnimaList in this one above. The active ones should go into _contestants

What I have tried:

I didn't know how to i really need help with this it's my last problem of this code i think

i nee to get the actives in this class in the list _contestants

class Event
{
private AnimalList _contestants;
}

Posted 18-Apr-16 23:11pm

MarioPT

Updated 18-Apr-16 23:33pm

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OriginalGriff · Accepted Answer · 2016-04-18T23:33:00

The problem is that your AnimalList in your Main method:

C#

static void Main(string[] args)
    {
    var AnimalList = new AnimslList();
    animalList.Add(new Animal{ Active = true, Name = "Bob", Photo = "Espanha" });
    animalList.Add(new Animal { Active = false, Name = "Robby", Photo = "Portugal" });
    animalList.Add(new Animal { Active = true, Name = "Snoop", Photo = "UK" });
    }

Is local to the function - you can't access it outside the function unless you pass it to another method.
So if you were to do this:

C#

static void Main(string[] args)
    {
    var AnimalList = new AnimslList();
    animalList.Add(new Animal{ Active = true, Name = "Bob", Photo = "Espanha" });
    animalList.Add(new Animal { Active = false, Name = "Robby", Photo = "Portugal" });
    animalList.Add(new Animal { Active = true, Name = "Snoop", Photo = "UK" });
    Event ev = new Event();
    ev.ListOfAnimalsPropertyYouNeedToAdd = AnimalList;
    ...
    }

You can then use the list you passed in to identify the active ones:

C#

foreach (Animal a in ev.GetActiveAnimals())
    {
    ...
    }

By writing the code in your Event class:

C#

public List<Animal> GetActiveAnimals()
    {
    return ListOfAnimalsYouSavedWhenYouSetThePropertyEarlier.GetActiveAnimals();
    }

(But don't call it Event - that has a specific meaning in C# that your teacher will explain later)