javascript - 使用 JavaScript 查询数据库

Question

我是 JavaScript 的新手，之前从未使用过 Ajax。我想向 Index.cshtml 添加一个 OnClick，因此当单击一行时，我的代码将查询数据库 (MSSQL) 并返回结果。我在数据库中有两个表，用户和联系人。 User中的主键，UID，是Contact中的外键。这是我的代码:

Controller

  private UserInfoEntities db = new UserInfoEntities();

  public ActionResult Index(){
      var users = from u in db.User orderby u.UID select u;
      return View(users.ToList());
}

查看

@<Info.Model.User>
   <script type="text/javascript">
    function showEmail() {
        var tb = document.getElementById("users");
        var rows = tb.rows;
        for (var i = 1; i < rows.length; i++) {
            rows[i].onclick = (function() { 
               //some code that query Contact table using UID
               // and return Contact.Email in a popup windows or something
            });
        }
    }
</script>
<table class="table" id="users" onclick="showEmail()">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.NAME)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.UID)
        </th>
    </tr>    
@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.NAME)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.UID)
        </td>   
    </tr>

感谢任何帮助!

Answer 1

试试这个；

 <script type="text/javascript">
    function showEmail() {

               //some code that query Contact table using UID
               // and return Contact.Email in a popup windows or something

    }
</script>
<table class="table" id="users" >
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.FirstOrDefault().NAME)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.FirstOrDefault().UID)
        </th>
    </tr>    
@foreach (var item in Model) {
    <tr onclick="showEmail()">
        <td>
            @Html.DisplayFor(modelItem => item.NAME)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.UID)
        </td>   
    </tr>
}