MVC 3复选框总是返回true，即使未选中

I have the following code

我有以下代码

@foreach (var item in Model.Defaults)
    {
        <tr class="CertainCategory">
            <td>
                @item.Item1
            </td>
            <td>
                @Html.CheckBoxFor(c => c.Use)
                @Html.Hidden("guid", guid.guid.ToString())
            </td>
        </tr>
    }
@foreach