Newtonsoft.Json验证:为属性强制使用一组特定的值

using Newtonsoft.Json;
using System;
using System.ComponentModel.DataAnnotations;

public class User
{
    [JsonProperty("name")]
    public string Name { get; set; }

    [JsonProperty("status")]
    [StatusValidation("active", "inactive", "pending")]
    public string Status { get; set; }
}

public class StatusValidationAttribute : ValidationAttribute
{
    private readonly string[] _allowedValues;

    public StatusValidationAttribute(params string[] allowedValues)
    {
        _allowedValues = allowedValues;
    }

    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        if (value == null || !Array.Exists(_allowedValues, allowedValue => allowedValue == value.ToString()))
        {
            return new ValidationResult($"Invalid value for {validationContext.MemberName}. Allowed values are: {_allowedValues.Join(", ")}");
        }

        return ValidationResult.Success;
    }
}

public static class ArrayExtensions
{
    public static string Join(this string[] array, string separator)
    {
        return string.Join(separator, array);
    }
}