arrow_back How to create a property based on a collection of a class in another C# class?

Question

How to create a property in the SecondClass class that should be a collection of firstClass created in the Program class where we added its objects - coll1. The first two classes are in the picture. The third one, where the property should be here below in the text. There should be just one line.

namespace NewProject
{
public class SecondClass
{

}
}

Comments

Vasily Bannikov , Can you write how the code will look like. I don't understand it yet, there should be one line of code. more specifically the task sounds like this - create a property of class 2, which will be a collection of the first class where we loaded its objects - coll1.

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IvanS1989 , it's written in the rules that you have to use the tag <code lang="cs"></code>

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IvanS1989 , use the tag code

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Developer , I added pictures. The text is not indented for some reason.

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Format the code. it's impossible to read

Answer 1

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            var firstObject = new FirstClass();
            var secondObject = new SecondClass();
            var thirdObject = new ThirdClass();

            var list = new List<IParent>();
            list.Add(firstObject);
            list.Add(secondObject);

            thirdObject.Collection = list;
        }
    }

    /// <summary>
    /// Родительский интерфейс
    /// </summary>
    public interface IParent
    {
        
    }
    
    /// <summary>
    /// Класс наследуемый от родительского интерфейса
    /// </summary>
    public class FirstClass : IParent
    {
        
    }

    /// <summary>
    /// Класс наследуемый от родительского интерфейса
    /// </summary>
    public class SecondClass : IParent
    {
        
    }

    public class ThirdClass
    {
        public List<IParent> Collection { get; set; } = new List<IParent>();
    }
}