无法从DataAnnotation验证获取验证错误消息

Question

我有一个简单的登录模型类，几乎没有数据注释验证

Public Class LoginUser
    <Required()> _
    Public Property UserName As String

    <Required()> _
    <StringLength(8)> _
    Public Property Password As String

End Class

View是一个部分View，如下所示：

<% Using (Html.BeginForm("Login", "User", FormMethod.Post))%>
<% Html.EnableClientValidation()%>

<%= Html.ValidationSummary() %>
<table ID="loginTable" runat="server">
    <tr>
        <td>
            <%= Html.LabelFor(Function(x) x.UserName)%>
        </td>
    </tr>
    <tr>
        <td>
            <%= Html.TextBoxFor(Function(x) x.UserName)%>
            <%= Html.ValidationMessageFor(Function(x) x.UserName) %>
        </td>
    </tr>
    <tr>
        <td>
            <%= Html.LabelFor(Function(x) x.Password)%>
        </td>
    </tr>
    <tr>
        <td>
            <%= Html.TextBoxFor(Function(x) x.Password)%>
            <%= Html.ValidationMessageFor(Function(x) x.Password)%>
        </td>
    </tr>
    <tr>
        <td>
            <input type="submit" value="Login" />
        </td>
    </tr>
</table>
<% End Using%>   

我相信我已经做了验证消息显示所需的所有事情，但它没有，客户端验证也没有。在母版页的头部区域，我还包括了以下脚本

<script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script src="../../Scripts/jquery.validate.min.js" type="text/javascript"></script> 
<script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>
<script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script>
<script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script>

是什么导致了这个问题？解决办法是什么？

Answer 1

您需要向注释中添加一些错误消息

Public Class LoginUser
    <Required()(ErrorMessage:="Username is required.")> _
    Public Property UserName As String

    <Required(ErrorMessage:="Pssword is required.")> _
    <StringLength(8)> _
    Public Property Password As String

End Class

不确定这是否会产生影响，但试着像这样添加true

    <%= Html.ValidationSummary(true)%>
<% Html.EnableClientValidation(true)%>