Does not contain a constructor that takes 0 arguments

Question

I get an error stating "Products does not contain a constructor that takes 0 arguments" from the following code:

public class Products
{
    string          


        

Answer 1

the constructor of the inherited class needs to construct the base class first. since the base class does not have a default constructor (taking 0 arguments) and you are not using the non-default constructor you have now, this won't work. so either A) add a default constructor to your base class, in which case the code of the descending class needs no change; or B) call the non-default constructor of the base class from the constructor of the descending class, in which case the base class needs no change.

A

public class Products
{
    public Products() { }
}

public class FoodProducts : Products
{
    public FoodProducts() { }
}

B

public class Products
{
    public class Products(args) { }
}

public class FoodProducts : Products
{
    public FoodProducts(args) : base(args) { }
}

some of this is explained rather OK on msdn here.