Fetching the Data from db and displaying it in table format using Ajax, Jquery, Asp.Net MVC

Question

I have established the connection to database and i want to display all the details in the db in the view in the table format but am unable to do it as my new can any one help.

 public class EmployeeModel
 {
    public int EmpId { get; set; }

    public string EmpName { get; set; }

    public int Age { get; set; }

    public int Salary { get; set; }

 }

Controller :

 private static readonly string connectionString =    ConfigurationManager.ConnectionStrings["ConnStringDb1"].ConnectionString;
    public ActionResult GetUser()
    {
        return View();
    }

    public JsonResult GetAllUser(int EmpId)
    {
        List<EmployeeModel> employee = new List<EmployeeModel>();
        string query = string.Format("Select * From Employee", EmpId);
        SqlConnection connection = new SqlConnection(connectionString);
        {
            using (SqlCommand cmd = new SqlCommand(query, connection))
            {
                connection.Open();
                SqlDataReader reader = cmd.ExecuteReader();

                while (reader.Read())
                {
                    employee.Add(
                        new EmployeeModel
                        {
                            EmpId = int.Parse(reader["EmpId"].ToString()),
                            EmpName = reader.GetValue(0).ToString(),
                            Age = int.Parse(reader["Age"].ToString()),
                            Salary = int.Parse(reader["Salary"].ToString())
                        }
                    );
                }
            }
            return Json(employee, JsonRequestBehavior.AllowGet);
        }
    }

View:

   @{
    ViewBag.Title = "Home Page";
    var EmployeeModel = (List<second_day.Models.EmployeeModel>)Model;
}
<button>Click me</button>

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script type="text/javascript">
    $(document).ready(function () {
        $(':button').click(function () {
            GetEmployeeUsingAjax();
        });
    });

    function GetEmployeeUsingAjax() {
        var EmpId = 2;
        $.ajax({
            type: 'GET',
            url: '@Url.Action("GetAllUser")',
            data: { "EmpId": EmpId},
            dataType: 'json',
            success: function (data) {
                $.each(data, function (i, item) {
                    var rows = "<tr>"
                    + "<td>" + item.EmpID + "</td>"
                    + "<td>" + item.EmpName + "</td>"
                    + "<td>" + item.Age + "</td>"
                    + "<td>" + item.Salary + "</td>"
                    + "</tr>";
                    $('#tblProducts tbody').append(rows);
                });
            },
            error: function (emp) {
                alert('error');
            }
        });
    }
</script>
<table class="tblProducts">
    <thead>
        <tr class="headings" style="background-color:#4495d1;">
            <th>EmpId</th>
            <th>EmpName</th>
            <th>Age</th>
            <th>Salary</th>
         </tr>
</thead>
    <tbody >
    </tbody>
</table>

Can anyone suggest me solution

Data is fetched in console but not displaying in table format

Answer 1

Your problem is this selector: $('#tblProducts tbody')

You have no table with that ID.

Changing it to $('.tblProducts tbody') or renaming your table to <table id="tblProducts"> should do the trick.

As a suggestion, move the DOM manipulation outside the loop, it will have better performance:

success: function (data) {
    var rows;
    $.each(data, function (i, item) {
        rows += "<tr>"
                  + "<td>" + item.EmpID + "</td>"
                  + "<td>" + item.EmpName + "</td>"
                  + "<td>" + item.Age + "</td>"
                  + "<td>" + item.Salary + "</td>"
             + "</tr>";
    });
    $('#tblProducts tbody').append(rows);
 },

Answer 2

Controller :-

private static readonly string connectionString =  ConfigurationManager.ConnectionStrings["ConnStringDb1"].ConnectionString;
        public ActionResult GetUser()
        {
            return View();
        }

        public JsonResult GetAllUser()
        {
            List<EmployeeModel> employee = new List<EmployeeModel>();
            string query = string.Format("Select * From Employee");
            SqlConnection connection = new SqlConnection(connectionString);
            {
                using (SqlCommand cmd = new SqlCommand(query, connection))
                {
                    connection.Open();
                    SqlDataReader reader = cmd.ExecuteReader();

                    while (reader.Read())
                    {
                        employee.Add(
                            new EmployeeModel
                            {
                                EmpId = int.Parse(reader["EmpId"].ToString()),
                                EmpName = reader.GetValue(0).ToString(),
                                Age = int.Parse(reader["Age"].ToString()),
                                Salary = int.Parse(reader["Salary"].ToString())
                            }
                        );
                    }
                }
                return Json(employee, JsonRequestBehavior.AllowGet);
            }
        }

View:

function GetEmployeeUsingAjax() {           
        $.ajax({
            type: 'GET',
            url: '@Url.Action("GetAllUser")',
            data: { },
            dataType: 'json',
            success: function (data) {
    var rows;
    $.each(data, function (i, item) {
        rows += "<tr>"
                  + "<td>" + item.EmpID + "</td>"
                  + "<td>" + item.EmpName + "</td>"
                  + "<td>" + item.Age + "</td>"
                  + "<td>" + item.Salary + "</td>"
             + "</tr>";
    });
    $('#tblProducts tbody').append(rows);
 },
            error: function (emp) {
                alert('error');
            }
        });
    }
</script>
<table id="tblProducts">
    <thead>
        <tr class="headings" style="background-color:#4495d1;">
            <th>EmpId</th>
            <th>EmpName</th>
            <th>Age</th>
            <th>Salary</th>
         </tr>
</thead>
    <tbody >
    </tbody>
</table>