Generic validation for Enum

Asked Jan 23 '19 at 14:44

Active Jan 23 '19 at 14:44

Viewed 45 times

What I'm trying to code:

public class Condition<TEnum>
{
    public string Operator { get; set; }

    public bool Validate()
    {
        return Enum.TryParse<TEnum>(this.Operator, true, out _);
    }
}

Using the above code, I got this compilation error with Enum.TryParse method:

Error CS0453 The type 'TEnum' must be a non-nullable value type in order to use it as parameter 'TEnum' in the generic type or method 'Enum.TryParse(string, bool, out TEnum)'

I'm wondering How to implement generic enum validation properly?

asked Jan 23 '19 at 14:44

Mhd

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You should use `class Condition where TEnum : struct, Enum`. – Alessandro D'Andria Jan 23 '19 at 14:47
1

@AlessandroD'Andria There´s no `Enum`-constraint. – MakePeaceGreatAgain Jan 23 '19 at 14:47
@HimBromBeere unfortunately in `TryParse` declaration no. – Alessandro D'Andria Jan 23 '19 at 14:52
Enum constraints exist in C# 7.3 – Alex K. Jan 23 '19 at 14:54

Generic validation for Enum

0 Answers0