无法为隐式类型的局部变量分配void

Question

Not sure what I am doing wrong syntax-wise here

        var inventories = new List<Inventory>().Add(new Inventory
        {

        });

Compile-time error:

cannot assign void to implicitly-typed local variable

Answer 1

List.Add returns void . Try

 var inventories = new List<Inventory>(){ new Inventory() };

Answer 2

The return value of Add is void .

I think you meant to write:

var inventories = new List<Inventory>();
inventories.Add(new Inventory{

});

Answer 3

The return type of Add() is a void, ie no return value, your code is trying to assign a reference to "nothing"

You have two options, declare the list, and then add to it

var inventories = new List<Inventory>();
inventories.Add(new Inventory());

or use an array initializer

var inventories = new List<Inventory>()
{ 
    new Inventory()
};