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Editorial Team
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Asked: 2026-05-13T21:32:20+00:00

I’ve got an Enum marked with the [Flags] attribute as follows: [Flags] public enum

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I’ve got an Enum marked with the [Flags] attribute as follows:

[Flags]
public enum Tag : int
{
    None = 0,
    PrimaryNav = 1,
    HideChildPages = 2,
    HomePage = 4,
    FooterLink = 8
}

On sitemapnodes in my sitemap I store the int value for the tags combination as an attribute.

What I need to do is check if a node has any one of one or more tags, e.g. Tag.PrimaryNav | Tag.HomePage.

I’m struggling with the necessary boolean logic to determine if an Enum value has one or more of the values it’s being compared with.

Apologies if this isn’t clear. I can provide more information if necessary.

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1 Answer

  1. Editorial Team

    You can do that by combining values with | and checking via &.

    To check if the value contains either of the tags:

    if ((myValue & (Tag.PrimaryNav | Tag.HomePage)) != 0) { ... }

    The | combines the enums you’re testing (bitwise) and the & tests via bitwise masking — if the result isn’t zero, it has at least one of them set.

    If you want to test whether it has both of them set, you can do that as well:

    Tag desiredValue = Tag.PrimaryNav | Tag.HomePage;
if ((myValue & desiredValue) == desiredValue) { ... }

    Here we’re masking off anything we don’t care about, and testing that the resulting value equals what we do care about (we can’t use != 0 like before because that would match either value and here we’re interested in both).

    Some links:

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