<Flags> Public Enum PetType As Integer
None = 0
Dog = 1
Cat = 2
Rodent = 4
Bird = 8
Reptile = 16
Other = 32
End Enum
Module Example
Public Sub Main()
Dim value As Object
' Call IsDefined with underlying integral value of member.
value = 1
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
' Call IsDefined with invalid underlying integral value.
value = 64
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
' Call IsDefined with string containing member name.
value = "Rodent"
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
' Call IsDefined with a variable of type PetType.
value = PetType.Dog
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
value = PetType.Dog Or PetType.Cat
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
' Call IsDefined with uppercase member name.
value = "None"
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
value = "NONE"
Console.WriteLine("{0}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
' Call IsDefined with combined value
value = PetType.Dog Or PetType.Bird
Console.WriteLine("{0:D}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
value = value.ToString()
Console.WriteLine("{0:D}: {1}", value, [Enum].IsDefined(GetType(PetType), value))
End Sub
End Module
' The example displays the following output:
' 1: True
' 64: False
' Rodent: True
' Dog: True
' Dog, Cat: False
' None: True
' NONE: False
' 9: False
' Dog, Bird: False
using System;
[Flags] public enum PetType
{
None = 0, Dog = 1, Cat = 2, Rodent = 4, Bird = 8, Reptile = 16, Other = 32
};
public class Example
{
public static void Main()
{
object value;
// Call IsDefined with underlying integral value of member.
value = 1;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with invalid underlying integral value.
value = 64;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with string containing member name.
value = "Rodent";
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with a variable of type PetType.
value = PetType.Dog;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
value = PetType.Dog | PetType.Cat;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with uppercase member name.
value = "None";
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
value = "NONE";
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with combined value
value = PetType.Dog | PetType.Bird;
Console.WriteLine("{0:D}: {1}", value, Enum.IsDefined(typeof(PetType), value));
value = value.ToString();
Console.WriteLine("{0:D}: {1}", value, Enum.IsDefined(typeof(PetType), value));
}
}
// The example displays the following output:
// 1: True
// 64: False
// Rodent: True
// Dog: True
// Dog, Cat: False
// None: True
// NONE: False
// 9: False
// Dog, Bird: False