关于 Asp.Net MVC Helper Html.Hidden

Question

我有以下模型，

Public Class BaseViewModel

Public Property Id as integer
Public Property Title As String

<DisplayName("Creation Date"), Required(), ScaffoldColumn(False)>
Public Property DateCreation As String
<DisplayName("Creation User"), Required(), ScaffoldColumn(False)>
Public Property UserCreation As String
<DisplayName("Modification Date"), ScaffoldColumn(False)>
Public Property DateModification As String
<DisplayName("Modification User"), ScaffoldColumn(False)>
Public Property UserModification As String

End Class

我创建了一个名为 BaseViewModel 的部分视图，该视图具有以下 HTML

<div id="Detail-Item" class="hidden">
@Using Html.BeginForm("Save", "Agency", Nothing, FormMethod.Post, New With {.id = "Detail-form"})
@<fieldset>
    <legend>Agency</legend>
    @Html.ValidationSummary()
    <div class="editor-label"> 
        @Html.LabelFor(Function(model) model.Id):
    </div>
    <div class="editor-field">
        @Html.TextBoxFor(Function(model) model.Id, New With {.class = "textbox-id input-key textbox-inactive", .data_field = "Id", .readonly = "readonly"})    
        @Html.ValidationMessageFor(Function(model) model.Id, "*")
    </div>
    <div class="editor-label">
        @Html.LabelFor(Function(model) model.Title):
    </div>
    <div class="editor-field">
        @Html.TextBoxFor(Function(model) model.Title, New With {.class = "textbox-name input-text focus", .data_field = "Title"})
        @Html.ValidationMessageFor(Function(model) model.Title, "*")
    </div>

    <div class="hidden">
        @Html.Hidden("UserCreation", String.Empty, New With {.class = "input-audituser", .data_field = "UserCreation"})
        @Html.Hidden("UserModification", String.Empty, New With {.class = "input-audituser", .data_field = "UserModification"})
        @Html.Hidden("DateCreation", String.Empty, New With {.class = "input-auditdate", .data_field = "DateCreation"})
        @Html.Hidden("DateModification", String.Empty, New With {.class = "input-auditdate", .data_field = "DateModification"})
    </div>
</fieldset>
End Using
</div>

为了呈现此视图，我使用 @html.EditForModel。我的问题是，即使我使用 Html.Hidden 作为 DateCreation 和 UserCreation 模型属性，为这些字段生成的 Html 也包含“必需”数据验证属性。

这是它应该工作的方式吗？如果是，如何避免这种情况？

Answer 1

鉴于您提供的模型，这是预期的行为。该模型将这两个属性指定为必需的，因此隐藏字段将添加不显眼的验证属性。

Answer 2

隐藏并不意味着它不会被验证。
为什么不在局部视图中设置正确的日期/时间，而不是用空字符串初始化这些隐藏字段。
像 DateTime.Now 这样的东西应该可以工作。