RegularExpression Attribute with Enum

Question

My enums are None, which means no value has been selected yet. Nothing should be stored in the database.

enum MyEnum
{
    None = 0,
    SomeValue = 1,
...
}

Is there a way that I can use the standard Data annotation expression such that validation fails if None is selected?

+3

Goran 09 Apr 12 at 13:05

2 answers

I would be tempted to do the following if all of your enums define None to be 0:

 [RegularExpression("[1-9][0-9]*", ErrorMessage = "None should never be saved to database.")]
 public MyEnum val { get; set; }

0

Alain 09 Apr 12 at 13:10

Henk Holterman · Accepted Answer · 2012-04-09T13:11:12+0000

You will have a better chance of being restricted [Range(SomeValue, LastValue)]

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