سلام
من کد زیر را نوشته ام اما فقط در گوگل کروم صحیح کارمیکند و در firefox و edge درست کار نمیکند
(مشکل اینه که وقتی عملیات ثبت را انجام میدهم اطلاعات فقط در کروم به روز میشود اما درfirefox و edge باید صفحه را رفرش کنم )
در debugger هم هیچ مشکلی نمایش نمیدهد.

@model IList<SignalR_11.Models.Employee>
@{
    ViewBag.Title = "Index";
}
<link href="~/Content/bootstrap.min.css" rel="stylesheet" />

<div>
    <h1 style="color: green">CRUD using SignalR,MVC and Entity Framework</h1>
    <table border="1">
        <tr>
            <td>
                <h1 style="color:blueviolet">Add/Update/Delete Employee</h1>
                <table border="1">
                    <tr>
                        <td>Employee Id</td>
                        <td><input id="txtEmployeeId" type="text" /></td>
                    </tr>
                    <tr>
                        <td>Employee Name</td>
                        <td><input id="txtEmployeeName" type="text" /></td>
                    </tr>
                    <tr>
                        <td>Email Address</td>
                        <td><input id="txtEmail" type="text" /></td>
                    </tr>
                    <tr>
                        <td>Mobile Number</td>
                        <td><input id="txtMobile" type="text" /></td>
                    </tr>
                </table>
                <table border="1">
                    <tr>
                        <td><button id="btnPostEmployee" onclick="InsertEmployee()">Add New Employee</button></td>
                        <td>
                            <button id="btnPutEmployee" onclick="UpdateEmployee()">Update Employee</button>
                            <button id="btnDeleteEmployee" onclick="DeleteEmployee();return false;">Delete Employee</button>
                        </td>
                    </tr>
                </table>
            </td>
        </tr>
    </table>
    <br /><br />
    <div id="dataTable"></div>
</div>

@section scripts{
    <script src="~/Scripts/jquery.signalR-2.2.3.min.js"></script>
    <script src="/signalr/hubs"></script>
    <script type="text/javascript">
        $(function () {
            var notificationFromHub = $.connection.employeeHub;
            $.connection.hub.start().done(function () {
                FetchEmployees();
            });
            notificationFromHub.client.updatedClients = function () {
                FetchEmployees();
            };
        });
        function FetchEmployees() {
            var model = $('#dataTable');
            $.ajax({
                url: '/home/GetAllEmployeeRecords',
                contentType: 'application/html ; charset:utf-8',
                type: 'GET',
                dataType: 'html',
                success: function (result) {
                    model.empty().append(result);
                }
            });
        }
        // Insert Employee Record
        function InsertEmployee() {

            debugger;
            var employee = {
                EmployeeId: $('#txtEmployeeId').val(),
                EmployeeName: $('#txtEmployeeName').val(),
                EmailAdress: $('#txtEmail').val(),
                MobileNumber: $('#txtMobile').val()
            };

            $.ajax({
                url: '/home/Insert',
                type: 'POST',
                data: JSON.stringify(employee),
                contentType: "application/json;charset=utf-8",
                success: function (data) {
                    alert('Employee added Successfully');
                },
                error: function () {
                    alert('Employee not Added');
                }
            });
        }

        // Update Employee Record
        function UpdateEmployee() {

            var employee = {
                EmployeeId: $('#txtEmployeeId').val(),
                EmployeeName: $('#txtEmployeeName').val(),
                EmailAdress: $('#txtEmail').val(),
                MobileNumber: $('#txtMobile').val()
            };
            $.ajax({
                url: '/home/Update',
                type: 'POST',
                data: JSON.stringify(employee),
                contentType: "application/json;charset=utf-8",
                success: function (data) {
                    alert('Employee updated Successfully');
                },
                error: function (e) {
                    alert('Employee could not be updated');
                }
            });
        }

        // Delete Employee Record
        function DeleteEmployee() {
            var employee = {
                EmployeeId: $('#txtEmployeeId').val()
            };

            $.ajax({
                url: '/home/Delete',
                type: 'POST',
                data: JSON.stringify(employee),
                contentType: "application/json;charset=utf-8",
                success: function (data) {
                    alert('Employee deleted Successfully');
                },
                error: function (x, y, z) {
                    alert(x + '\n' + y + '\n' + z);
                }
            });
        }
    </script>
}