Prevent page refresh on Submit Button click in ASP.Net MVC

Hi 65sametkaya65,

If you don't want to refresha the page make Ajax call to save the record in database.

For more details refer below article.

ASP.Net MVC: Insert Data to Database using jQuery AJAX

Refer the updated code.

<div class="w3-top" style="width: 85%">
    <div class="w3-bar w3-red">
        <a href="#" class="w3-bar-item w3-button">Masa-@ViewBag.frm</a>
        @using (Html.BeginForm("GarsonCagir", "AnaMenu", FormMethod.Post))
        {
            <button class="btn btn-warning" id="ajax">Ajax</button>
            <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
            <script type="text/javascript" src="https://ajax.cdnjs.com/ajax/libs/json2/20110223/json2.js"></script>
            <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>
            <script type="text/javascript">
                $("body").on("click", "#ajax", function () {
                    var g = {};
                    g.masaid = $("#MASAID").val();
                    g.firmakodu = $("#FIRMAKODU").val();
                    g.garson = $("#GARSON").val();
                    $.ajax({
                        type: "POST",
                        url: "/AnaMenu/GarsonCagir",
                        data: JSON.stringify(g),
                        contentType: "application/json; charset=utf-8",
                        dataType: "json",
                        success: function (r) {
                            alert("CustomerId: " + r.masaid);
                        }
                    });
                });

                $("body").on("click", '#ekle', function () {
                    Swal.fire({
                        title: "Good job!",
                        text: "You clicked the button!",
                        icon: "success"
                    });
                })
            </script>

            <input type="text" name="MASAID" id="MASAID" value="@ViewBag.masaid" />
            <input type="text" name="FIRMAKODU" id="FIRMAKODU" value="@ViewBag.firma" />
            <input type="text" name="GARSON" id="GARSON" value="1" />
            <input onkeyup="history.back()" type="submit" value="<<aa aa">
            <button id="ekle" class="btn btn-danger">Garson Çağır</button>
        }
        <button style="background-color: black; color: white">Garson Çağır</button>
        <button style="background-color: black; color: white" data-toggle="modal" data-target="#Modal1">Siparişi Gönder</button>
        <input onclick="history.back();" type="button" value="<<geri dön">
        <a href="/AnaMenu/Masa" class="btn btn-danger">Ana Sayfa</a>
    </div>
</div>