Get All properties that has a custom attribute with specific values

Question

Possible Duplicate:
How to get a list of properties with a given attribute?

I have a custom class like this

public class ClassWithCustomAttributecs
{
    [UseInReporte(Use=true)]
    public int F1 { get; set; }

    public string F2 { get; set; }

    public bool F3 { get; set; }

    public string F4 { get; set; }
}

I have a custom attribute UseInReporte:

[System.AttributeUsage(System.AttributeTargets.Property ,AllowMultiple = true)]
public class UseInReporte : System.Attribute
{
    public bool Use;

    public UseInReporte()
    {
        Use = false;
    }
}

No I want to get All properties that has [UseInReporte(Use=true)] how I can do this using reflection?

thanks

Andrei · Accepted Answer · 2012-10-29T12:24:28.803

19

List<PropertyInfo> result =
    typeof(ClassWithCustomAttributecs)
    .GetProperties()
    .Where(
        p =>
            p.GetCustomAttributes(typeof(UseInReporte), true)
            .Where(ca => ((UseInReporte)ca).Use)
            .Any()
        )
    .ToList();

Of course typeof(ClassWithCustomAttributecs) should be replaced with an actual object you are dealing with.

edited Oct 29 '12 at 12:24

answered Oct 29 '12 at 12:18

Andrei

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Not sure how this handles `[UseInReporte(Use=true)]` – Jon B Oct 29 '12 at 12:21
thanks dear friend. How I can get properties wihich `Use == true` ? – Arian Oct 29 '12 at 12:23
@JonB, good point, thanks. Updated the answer – Andrei Oct 29 '12 at 12:24
@Kerezo, please see the updated version. – Andrei Oct 29 '12 at 12:25
1

Instead of `.Count() >= 1` i would take `.Any()`. – Oliver Oct 29 '12 at 12:27
@Kerezo, are you expected to obtain properties with attribute of exact type UseInReporte, or any of its subclass? – Hamlet Hakobyan Oct 29 '12 at 12:27

Get All properties that has a custom attribute with specific values

1 Answers1