mono/mcs/class/referencesource/System.ServiceModel/System/ServiceModel/HostnameComparisonMode.cs

//----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//----------------------------------------------------------------------------
namespace System.ServiceModel
{
    using System.ComponentModel;

    public enum HostNameComparisonMode
    {
        StrongWildcard = 0, // +
        Exact = 1,
        WeakWildcard = 2,   // *
    }

    static class HostNameComparisonModeHelper
    {
        internal static bool IsDefined(HostNameComparisonMode value)
        {
            return
                value == HostNameComparisonMode.StrongWildcard
                || value == HostNameComparisonMode.Exact
                || value == HostNameComparisonMode.WeakWildcard;
        }

        public static void Validate(HostNameComparisonMode value)
        {
            if (!IsDefined(value))
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidEnumArgumentException("value", (int)value,
                    typeof(HostNameComparisonMode)));
            }
        }
    }
}