public IEnumerable <ValidationResult> Validate(ValidationContext validationContext) { if (!Email.IsNullOrEmpty()) { string address = null; try { address = new MailAddress(Email).Address; } catch { // ignored } if (address.IsNullOrEmpty()) { yield return(new ValidationResult("电子邮箱不符合规范,请输入正确的邮箱", new[] { "Email" })); } } }