如何从.Net中的字符串验证模型/类的属性？

using System.ComponentModel.DataAnnotations;

public class YourModel
{
    [Required(ErrorMessage = "属性不能为空")]
    [StringLength(50, MinimumLength = 3, ErrorMessage = "属性长度必须在3到50之间")]
    public string YourProperty { get; set; }
}

using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Mvc;

public class YourController : Controller
{
    [HttpPost]
    public IActionResult YourAction(YourModel model)
    {
        List<ValidationResult> results = new List<ValidationResult>();
        bool isValid = Validator.TryValidateObject(model, new ValidationContext(model), results, true);

        if (isValid)
        {
            // 模型/类的属性验证通过，执行相应的逻辑
            return View("Success");
        }
        else
        {
            // 模型/类的属性验证失败，返回错误信息
            foreach (var validationResult in results)
            {
                ModelState.AddModelError("", validationResult.ErrorMessage);
            }
            return View("Error");
        }
    }
}