1.action寫法：
        #region 列表首頁
        public ActionResult Index()
        {
YunWeiEntities db = new YunWeiEntities();
            return View(db.vpnuserinfotest1.ToList());
        }
        #endregion

2.試圖寫法
@model IEnumerable<haha20171114.EFmodel.vpnuserinfotest1>

<h2>Index</h2>

<h3>xxf  Hello World!</h3>

<p>
    @Html.ActionLink("建立", "Create")
</p>
<table>
    <tr>
        <th>自動ID</th>
        <th>姓名</th>
        <th>登入ID</th>
        <th>操作</th>
    </tr>
    @foreach (var item in Model)
    {
        <tr>
            <td>@item.ID</td>
            <td>@item.Name</td>
            <td>@item.UserID</td>
            <td>
                @Html.ActionLink("編輯", "Edit", new { id = item.ID }) |
                @Html.ActionLink("詳情", "Details", new { id = item.ID }) |
                @Html.ActionLink("刪除", "Delete", new { id = item.ID })
            </td>
        </tr>
    }

</table>