无法读取从视图中的控制器接收的 json 数据的值

Question

我有 json 从控制器传递并使用 ajax 接收的数据 view.I 无法读取视图中的值。请帮忙。我还附上了视图代码和控制器代码。

查看：-

$(function () {

    $('#btn1').click(function () {
        alert('hello');
        $.ajax({
            url: '/TodoList/Check',
            type: 'Get',
            dataType: 'json',
            //contentType: "application/json; charset=utf-8",
            success: function (data) {
               // fs = data[1].FirstName;
                alert(JSON.stringify(data.FirstName));
            }

        })


    });


});

控制器：-

 public JsonResult Check()
        {
            string ConnectionString = ConfigurationManager.ConnectionStrings["EmployeeContext"].ConnectionString;
            SqlDataReader rdr = null;
            List<Employee> l = new List<Employee>();
            Employee e = new Employee();
            int Sal = e.Salary;
            SqlDataAdapter da;
            DataSet ds = new DataSet();
            using (SqlConnection connection = new SqlConnection("data source=.; database=Srivatsava; integrated security=SSPI"))
            {
                connection.Open();
                da = new SqlDataAdapter("select UserName,Pass from UserPass", connection);
                da.Fill(ds);
                foreach (DataRow dr in ds.Tables[0].Rows)
                {
                    l.Add(new Employee() { FirstName = dr[0].ToString(), LastName = dr[1].ToString() });
                }
                connection.Close();
            }
            //int pageIndex = Convert.ToInt32(page) - 1;
            //int pageSize = rows;
            var todoListsResults = l.Select(
                  a => new
                  {

                      a.FirstName,
                      a.LastName

                  });
           // int totalRecords = todoListsResults.Count();
            //var totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
            //if (sord.ToUpper() == "DESC")
            //{
              //  todoListsResults = todoListsResults.OrderByDescending(s => s.FirstName);
                //todoListsResults = todoListsResults.Skip(pageIndex * pageSize).Take(pageSize);
            //}
            //else
            //{
              //  todoListsResults = todoListsResults.OrderBy(s => s.FirstName);
                //todoListsResults = todoListsResults.Skip(pageIndex * pageSize).Take(pageSize);
           // }
            var jsonData = new
            {
             //   total = totalPages,
               // page,
                //records = totalRecords,
                rows = todoListsResults
            };
            return Json(jsonData, JsonRequestBehavior.AllowGet);



        }

Answer 1

您的 json 对象中有一个名为 rows 的数组，用于保存您的数据。您的 success 回调应该如下所示。

success: function (data) {
     var rows=data.rows;
     alert(rows[0].FirstName);

     //use each loop to go through all data
     //$.each(rows, function(){
           //alert(this.FirstName)
     //})
}

Answer 2

你可以简单地使用这个方法：

success: function (data) {
     $.each(rows, function(){
          alert(this.FirstName +' ' +this.LastName )
     })

无法读取从视图中的控制器接收的 json 数据的值

Can't read values of json data received from controller in a view

asp.net-mvc

jquery

json

asp.net-ajax

查看：-

控制器：-