c# - ValidationMessageFor 的使用

Question

我如何检查模型属性是否存在验证错误 - 我正在使用 validationmessagefor 方法来显示错误消息。我怎样才能一次只显示一条错误消息？我

这是我拥有的模型属性 m.CommunicationView.MobilePhone.Area m.CommunicationView.MobilePhone.Number

 <div class="fl">
   @Html.TextBoxFor(m => m.CommunicationView.MobilePhone.Area, new { @id = "personalDetailMobilePhoneAreaInput",  @class="customText wdt80 numericValue",type = "text",maxlength="2" })
   @Html.TextBoxFor(m => m.CommunicationView.MobilePhone.Number, new { @id = "personalDetailMobilePhoneNumberInput",  @class="customText wdt120 mrglft10 phnIE numericValue",type = "text",maxlength="8" })
   @Html.ValidationMessageFor(m => m.CommunicationView.MobilePhone.Area)
   @Html.ValidationMessageFor(m => m.CommunicationView.MobilePhone.Number)
</div>

Answer 1

只需将 ErrorMessage 字段作为 [Required] 装饰器的一部分添加到您的模型中。例如数字:

[Required(ErrorMessage = "Number is required")]
[StringLength(10, ErrorMessage = "Number can be no larger than 10 characters")]
public string Number { get; set; }