如何循环查看打包的Viewbag列表?

时间:2016-05-25 12:00:24

标签: javascript asp.net list for-loop document-ready

我已通过Viewbag将List<AdminUsers>传递给视图。然后将该列表分配给javascript var并循环播放。

但是在视图调试期间,这个for循环永远不会循环,虽然我已经设置了一个断点。

循环的目的是检查adminUserList中的任何用户是否与当前登录的用户匹配。 currentUser也是init,因此排除此值为空。

为了调试原因。我测试了Viewbag.AdminUserList已分配,并且在控制器中是init。我还在此列表的视图中设置了一个警报,它是init。

问题:

有谁知道为什么在javascript中没有调用以下for loop

这是调试期间js adminUserList的值:

var adminUserList = [{"AdminID":1,"AdminDisplayName":"brianb","AdminEmailAddress":"brian@test.com"},{"AdminID":2,"AdminDisplayName":"wendy","AdminEmailAddress":"wendy@test.com"}];

代码:

Javascript for loop -

<script>

    var currentUser = '@ViewBag.CurrUser';
    var adminUserList = @Html.Raw(Json.Encode(ViewBag.AdminUserList));

    $(document).ready(function () {

        var historyTable = $('#table').DataTable({
            "order": [[6, "desc"]]
        });

        //Loop through each of the admin users, if any of
        //the admin users match the current user, hide the delete column.   
        for (var i = 0; i < adminUserList.Count; i++)
        {
            if (currentUser == adminUserList.AdminDisplayName[i]) {
                //hide the delete table option from a non admin user
                historyTable.columns([9]).visible(false);
            }

        }    

    });


</script>

控制器索引方法 -

    public ActionResult Index()
    {
            HistoryDAL sqlConnection = new HistoryDAL();
            List<AdminUsers> adminList = sqlConnection.GetAdminUsers();

            //Get the current user
            var components = User.Identity.Name.Split('\\');
            var userName = components.Last();

            //Assign current user and admin list to viewbag
            ViewBag.CurrUser = userName;
            ViewBag.AdminUserList = adminList;

            return View("Index");

    }

模型 - AdminUsers:

public class AdminUsers
{
    public int AdminID { get; set; }
    public string AdminDisplayName { get; set; }
    public string AdminEmailAddress { get; set; }

}

1 个答案:

答案 0 :(得分:2)

在第

for (var i = 0; i < adminUserList.Count; i++)

您需要使用JavaScript adminUserList.length而不是C#adminUserList.Count,因为adminUserList是JavaScript变量而不是C#。