Type.IsEnum Property in Portable Class Library

Question

I'm trying to code in a Portable Class Library using ASP.NET Core 1.0, the following instruction:

public static void WriteMessage<T>(T value)
{
    if (typeof(T).IsEnum)
    {
        Debug.Print("Is enum")
    }
    else
    {
        Debug.Print("Not Is enum")
    }
}

But this code does not compile because the compiler says that the property IsEnum is non present on Type.

Any suggestions?

[documentation](https://msdn.microsoft.com/en-us/library/system.type.isenum(v=vs.100).aspx) says : "If the current Type represents a type parameter in the definition of a generic type or generic method, this property always returns false." [this](https://social.msdn.microsoft.com/Forums/en-US/7e805189-a7e5-4562-a6e4-ae9feff77da7/what-is-the-equivalent-of-fieldtypeisenum-in-metro?forum=winappswithcsharp) may be relevant, too — Cee McSharpface, Jul 12 '16 at 11:27

score 42 · Answer 1 · answered Jul 12 '16 at 11:27

42

Some functionality from Type was moved to TypeInfo in .NET Core.

typeof(T).GetTypeInfo().IsEnum

answered Jul 12 '16 at 11:27

Gabriel Negut

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Hi Gabriel, I try to use your code but the function GetTypeInfo() is not present on Type. what is wrong? – Karlok Jul 12 '16 at 12:16
4

`GetTypeInfo()` is an extension method from `IntrospectionExtensions`. Add `using System.Reflection` to your class. – Gabriel Negut Jul 12 '16 at 12:20
It's right!!! I forgot the "Using". Thank you Gabriel!! now it works :-) – Karlok Jul 12 '16 at 13:29
This also worked for me. @Karlok mind marking as answer so it can float to the top. – CyberFox Jun 20 '17 at 09:33

Type.IsEnum Property in Portable Class Library

1 Answers1