如何通过jquery在show / hide上启用/禁用不显眼的验证？

更新：
我要问的是,是否可以删除验证规则,这些验证规则仅在客户端的viewmodel中的字段上的Attributes中推断出来.

–

当从下拉列表中进行选择时,我正在切换某些字段的显示.我还需要切换验证.

viewmodel.cs：

public int ddlTypeID { get; set; }
public Dictionary<int,string> ddlTypes { get; set; }

[required(ErrorMessageResourceName = "msgrequired",ErrorMessageResourceType = typeof(Resources.Globals))]
public DateTime firstDate {get; set;}

[required(ErrorMessageResourceName = "msgrequired",ErrorMessageResourceType = typeof(Resources.Globals))]
public DateTime otherDate {get; set;}

Create.cshtml：

<script type="text/javascript">
    $(document).ready(function () {
       $('.optional').hide();
       $('#ddlTypeID').change(function () {
            var id = $(this).val();
            if (id == 1) {
                $('.optional').show();
            } else {
                $('.optional').hide();
            }
        });
    });
</script>

@using (Html.BeginForm())
{
    <div class="editor-field">
        @Html.DropDownListFor(x=>x.ddlTypeID,new SelectList(Model.ddlTypes,"Key","Value",Model.ddlTypeID),Resources.Globals.msgType)
        @Html.ValidationMessageFor(model => model.ddlTypeID)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.firstDate )
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.firstDate )
        @Html.ValidationMessageFor(model => model.firstDate )
    </div>

    <div class="editor-label optional">
        @Html.LabelFor(model => model.otherDate )
    </div>
    <div class="editor-field optional">
        @Html.EditorFor(model => model.otherDate )
        @Html.ValidationMessageFor(model => model.otherDate )
    </div>

    <input type="submit" value="Save" />
}

这可以隐藏/显示otherDate的字段 – 但是如何在同一时间切换验证？或者有更好的方法吗？

function IgnoreValidationForHiddenElements() {

  $.validator = $("#formid").validate(
               {
                   ignore: ":hidden"
               });
}

$(document).ready(function () {
//Your Code
}