如何在asp.net核心中通过属性名从模型中获取验证属性

using System;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Reflection;

public static class ValidationExtensions
{
    public static ValidationAttribute GetValidationAttribute(this Type modelType, string propertyName)
    {
        var propertyInfo = modelType.GetProperty(propertyName);
        if (propertyInfo != null)
        {
            var validationAttributes = propertyInfo.GetCustomAttributes<ValidationAttribute>();
            return validationAttributes.FirstOrDefault();
        }
        return null;
    }
}

using Microsoft.AspNetCore.Mvc;
using System;

public class HomeController : Controller
{
    public IActionResult Index()
    {
        var modelType = typeof(YourModelClass);
        var propertyName = "YourPropertyName";
        var validationAttribute = modelType.GetValidationAttribute(propertyName);

        if (validationAttribute != null)
        {
            // 在这里可以使用 validationAttribute 进行进一步的操作
            // 例如，获取验证属性的类型、获取验证属性的参数值等
        }

        // 其他逻辑...

        return View();
    }
}