Html Helper - 第二个DropdownList未经过验证

Question

我有一个属性DepartmentId的必需注释，然后我创建这样的视图，“form1”显示消息，我必须选择，但“form2”没有做任何事情并提交，如果我删除“form1”，“form2”会正常工作。有没有办法制作＆＃34; form2＆＃34;验证，谢谢。

<form method="post" name="form1">
    @Html.DropDownList("DepartmentId",
        new SelectList(departments, "Id", "Name"),
        "Select Gender",
        new { @class = "form-control" })
    @Html.ValidationMessageFor(x => x.DepartmentId)
    <button>Submit</button>
</form>


<form method="post" name="form2">
    @Html.DropDownList("DepartmentId ",
        new SelectList(departments, "Id", "Name"),
        "Select Gender",
        new { @class = "form-control" })
    @Html.ValidationMessageFor(x => x.DepartmentId)
    <button>Submit</button>
</form>