public class Users{public int Id { get; set; }public string Name { get; set; }[Required(ErrorMessage = "邮箱不能为空")][EmailAddressAttribute(ErrorMessage = "邮箱格式不正确")]public string Email { get; set; }[DisplayName("密码")][Required(ErrorMessage = "密码不能为空")]public string Password { get; set; }}

验证

[HttpPost]public IActionResult Get([FromRoute]Users model){if (!ModelState.IsValid){var sb = new StringBuilder();foreach (var key in ModelState.Keys){var state = ModelState[key];if (state.Errors.Any()){sb.Append(state.Errors.First().ErrorMessage + "\n\r");}}return Ok(sb.ToString());}return Ok(model);}