Question

I have the following code, The problem is when I’m trying to assign the country to customer, getting error. I need to know how to assign the property that is declared as enum? I will use this in a linq expression, is there any other way to use enum?

var customers = new Customer[] {
    new Customer { Name= "Badhon",City=   "Dhaka",Country=Countries.Country.Bangladesh,Order= new Orders[] {
        new Orders { OrderID=1,ProductID=1,Quantity=2,Shipped=false,Month="Jan"}}},
    new Customer {Name = "Tasnuva",City = "Mirpur",Country =Countries .Country .Italy,Order =new Orders[] {
        new Orders { OrderID=2,ProductID=2,Quantity=5,Shipped=false,Month="Feb"}}}
}

My enum is defined like this:

public class  Countries
{
    public enum Country  {Italy,Japan,Bangladesh};

}

And Customer as follows:

public class Customer
{
    public string Name;
    public string City;
    public Countries Country;
    public Orders[] Order;

    public override string  ToString()
    {
        return string.Format("Name: {0} - City: {1} - Country: {2}", this.Name, this.City, this.Country);
    }

}

Answer 1

Your problem is that your field in Customer is of type Countries, not Countries.Country. And you are trying to assign a Countries.Country which obviously is incompatible.

An enum is a type, just like classes are. You don’t need the class around it. You should get rid of the outer class there:

public enum Country { Italy,Japan,Bangladesh }

and redefine the field in Customer:

public Country Country;

(yes, having a class member with the same name as a type works in C#).

Another issue: You should probably use properties and not fields:

public Country Country { get; set; }

This will make your life easier down the line (and you can use it just like you did now, until you have read up on the differences).