如何将@Html.ValidationMessageFor 用于@Html.TextBox

Question

以下工作正常：

@Html.TextBoxFor(x => x.Residence.Rent, new { @class = "form-control"" })
@Html.ValidationMessageFor(x => x.Residence.Rent, null, "span")

但是需要向控制器发送一个对象列表。所以我尝试了这个：

@for(int index = 0; index < Model.ResidencesList.Count; index++)
{
    @Html.TextBox("ResidencesList[" + index + "].Rent", ResidencesList[index].Rent, new { id="", @class = "form-control"" })
    @Html.ValidationMessageFor("ResidencesList[" + index + "].Rent", null, "span")
}

将标记呈现为：

<input class="form-control" name="ResidencesList[0].Rent" type="text" value="">
<span class="field-validation-error" data-valmsg-for="ResidencesList[0].Rent" data-valmsg-replace="true">
   <span>undefined</span>
</span>

提交时验证不会触发，当我选择文本框时还会显示“未定义”消息。

Answer 1

尝试替换

  @Html.TextBox("ResidencesList[" + index + "].Rent", ResidencesList[index].Rent, new { id="", @class = "form-control"" })
 @Html.ValidationMessageFor("ResidencesList[" + index + "].Rent", null, "span")

与

@Html.TextBoxFor(model=> model.ResidencesList[index].Rent, new {  @class = "form-control"})
 @Html.ValidationMessageFor( model=> model.ResidencesList[index].Rent, "", new { @class = "text-danger" })