Question

我有一个MVC应用程序，它将列出名称。（这些名称位于实体框架数据库中。）计时器位于列表中的第一个名称旁边，当计时器结束时，名称将从列表中删除，列表中的第二个名称将向上移动并且计时器重新开始（这一直持续到没有名字留下）。我还需要添加从EF数据库中删除名称的功能。有什么想法吗？

JQuery的

 $(document).ready(function () {
    startTimer();
    function startTimer() {           
        $('#timer').countdown({
            layout: '{mnn} : {snn}', timeSeparator: ':', until: 5, onTick: TimerColorChange, onExpiry: restartTimer

        });            
    }

    function restartTimer() {          
        $('#timer').countdown('destroy');

        //we delete the table's Info
        var deleteRecord = $('#firstName').parent().remove();
        // deleteRecord.deleteRow(); //commented out since this also removes my timer

        startTimer();
    }

    function TimerColorChange(periods) {
        var seconds = $.countdown.periodsToSeconds(periods);
        if (seconds <= 3) {
            $(this).css("color", "red");
        } else {
            $(this).css("color", "black");
        }
    }


});

型号代码：

 public class UserName
{

    public int Id { get; set; }
    [Display(Name = "Full Name")]
    public string FullName { get; set; }

}

public class UserNameDBContext : DbContext
{

    public DbSet<UserName> UserNames { get; set; }
}

查看：

@model IEnumerable<RangeTimer.Models.UserName>

@{
    ViewBag.Title = "";
 }
<br />



<table class="table">
    <tr>
       <th>
        @Html.DisplayNameFor(model => model.FullName)
    </th>

    <th>
         Time Remaining
    </th>

</tr>

@foreach (var item in Model) {
<tr>
    <td id="firstName">
        @Html.DisplayFor(modelItem => item.FullName)
    </td>


    <td id="timer">

        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span id="timer"></span>


    </td>

</tr>
}

</table>

控制器：

 private UserNameDBContext db = new UserNameDBContext();



    // GET: UserNames
    public ActionResult Index()
    {


        return View(db.UserNames.ToList());
    }

Answer 1

我会给你一个小例子：

1）添加删除控制器中用户名的方法

// GET: Delete
public JsonResult DeleteName(string name)
{
    //Delete your user from your context here 
    return Json(true, JsonRequestBehavior.AllowGet);
}

2）在你的javascript中使用ajax请求调用此函数：

function restartTimer() {          
    $('#timer').countdown('destroy');

    //we delete the table's Info
    var deleteRecord = $('#firstName').parent().remove();
    // deleteRecord.deleteRow(); //commented out since this also removes my timer
    var action ='@Url.Action("DeleteName","Controller")';

    $.get(action+"?name="+nameToDelete).done(function(result){
      if(result){
      // your user is deleted
      }
   })


    startTimer();
}

使用jQuery从Entity Framework数据库中删除记录

1 个答案: