Question

Is there a way I can initialize a list in a class with existing items?

I basically would like to instantiate a class object and initialize a list with some elements already in it from existing as well as new items.

public class Item
{
    public string Property {get; set;}
}

public class MyClass
{
    public virtual IEnumerable<Item> Items {get; set;}
}

var itemToAdd = context.Items( i => i.Property == "Desired" );

MyClass myclass = new MyClass()
{
    Items = new List<Item>() 
    {
        new List<Item> (),
        { 
            Property = "New" 
        },
        // Would like itemToAdd to be added here when I create a new List.
    }
};

Answer 1

You can initialize a list with data by passing a collection to the constructor. For example

var itemToAdd = context.Items( i => i.Property == "Desired" );

MyClass myclass = new MyClass()
{
    Items = new List<Item>(itemToAdd) // You can pass any collection of IEnumerable here.
}