Initial Value of an Enum

Question

I have a class with a property which is an enum

The enum is

/// 

/// All available delivery actions
/// 
public enum E         


        

Answer 1

Enums are value types. Value types cannot be null and are initialized to 0.

Even if your enum does not have a 0, enum variables will be initialized to 0.

public enum SomeEnum
{
    A = 1,
    B = 2
}

(later)

SomeEnum x = default(SomeEnum);
Console.WriteLine(x);

Outputs - 0

---

Some answerers are advocating using Nullable to match your initialization expectations. Becareful with this advice since Nullable is still a value type and has different semantics than reference types. For example, it will never generate a null reference exception (it's not a reference).

SomeEnum? x = default(SomeEnum?);

if (x == null)
{
    Console.WriteLine("It's null!");
}
if (x > SomeEnum.B)
{
}
else
{
    Console.WriteLine("This runs even though you don't expect it to");
}