How to add multiple objects to a asp.net mvc form

So I am building an application where employees of a company have to be able to make orders for clients.

In my application I have a product class like this

public string Name { get; set; } public string Description { get; set; } public decimal Price { get; set; } public string Image { get; set; } public int Stock { get; set; } public int ID { get; set; }

    public Product(string name, string description, string image, int stock, decimal price,int id)
    {
        this.Name = name;
        this.Description = description;
        this.Image = image;
        this.Stock = stock;
        this.Price = price;
        this.ID = id; 
    }

the order class looks like this

public class Order { public List<Product> Products { get; set; } public int OrderID { get; } public int Price { get; set; } public Employee Salesman { get; set; } public DateTime OrderDate { get; set; } public int Payback { get; set; }

    public Order(List<Product> products, int orderid, int price,Employee salesman,DateTime orderDate,int payback)
    {
        this.Products = products;
        this.OrderID = orderid;
        this.Price = price;
        this.Salesman = salesman;
        this.OrderDate = orderDate;
        this.Payback = payback;
    }

    public Order()
    {

    }

in the order there is a list of products, however I just can't figure out how select all products in my databse and add the abilty to create a dropdown in my form where the user can just click on a product in the dropdown and it gets added to the product list any help would be much appreciated