twitter-bootstrap – MVC Bootstrap形成样式问题

我的bootstrap mvc表单有一个小问题.当我添加我的剃刀时,表单组的边距似乎不起作用.任何帮助将不胜感激.

这种形式不能正确地进行样式化@H_450_7@

@using (Html.beginForm("Contact","Home"))
{
@Html.AntiForgeryToken()
@Html.ValidationSumMary(true)
<form class="form-horizontal" role="form">
    <div class="form-group">
        <label for="formGroupInputLarge1" class="col-sm-2 control-label">Name</label>
        <div class="col-sm-10">
            @Html.TextBoxFor(m => m.Name,new { @class = "form-control",placeholder = "Fullname",tabindex = 1 })
            @Html.ValidationmessageFor(m => m.Name)
        </div>
    </div>
    <div class="form-group">
        <label for="formGroupInputLarge2" class="col-sm-2 control-label">Email</label>
        <div class="col-sm-10">
            @Html.TextBoxFor(m => m.Email,placeholder = "Email Address",tabindex = 2 })
            @Html.ValidationmessageFor(m => m.Email)
        </div>
    </div>
    <div class="form-group">
        <label for="formGroupInputLarge3" class="col-sm-2 control-label">message</label>
        <div class="col-sm-10">
            @Html.TextAreaFor(m => m.message,placeholder = "message",tabindex = 3 })
            @Html.ValidationmessageFor(m => m.messagE)
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <button type="submit" class="btn btn-priMary btn-lg">Send Mail</button>
        </div>
    </div>
</form>
}

但是一旦我删除了Begin表单,它就会采用正确的样式@H_450_7@

<form class="form-horizontal" role="form">
    <div class="form-group">
        <label for="formGroupInputLarge1" class="col-sm-2 control-label">Name</label>
        <div class="col-sm-10">
            @Html.TextBoxFor(m => m.Name,tabindex = 3 })
            @Html.ValidationmessageFor(m => m.messagE)
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <button type="submit" class="btn btn-priMary btn-lg">Send Mail</button>
        </div>
    </div>
</form>

@using (Html.beginForm("Contact","Home"))

@using (Html.beginForm("Contact","Home",FormMethod.Post,new { @class="form-horizontal",role="form" }))

<form class="form-horizontal" role="form">