在DropDownListFor验证与DataAnnotations工作 [英] Validation on DropDownListFor not working with DataAnnotations

问题描述

如果我有一个下拉列表如下：

If I have a drop down list as follows

<div class="editor-label">
 <%= Html.DropDownListFor(model => model.CardDetail.SelectedCardSchemeId,
  Model.CardDetail.CardSchemes, "Select")%> 
</div>

和在我的模型我使用DataAnnotations

and in my model I am using DataAnnotations

[Required(ErrorMessage = "* Required SelectedCardSchemeId Message")]
public int SelectedCardSchemeId { get; set; }

我怎样才能得到的消息出现在看法？
在调试我能看到的ModelState错误被填充，但在视图不显示的消息。
我没有问题，与其他控件显示错误消息（TextBoxFor）

How can I get the message to appear in the view? In debug I can see the ModelState error is populated, but the message is not displayed on the view. I do not have issues with displaying error message for other controls (TextBoxFor)

推荐答案

你把一个验证消息占位符？

Did you put a validation message placeholder?

<%= Html.ValidationMessageFor(model => model.CardDetail.SelectedCardSchemeId) %>

或

<%= Html.ValidationSummary() %>

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