How to pass variable from jquery to code in c#

Question

in my page i have an int variable name mySerial and i want to pass a value from a script

mySerial =ui.item.Serial is not working

Answer 1

You could pass this variable as query string parameter to some controller action:

<script type="text/javascript">
    var mySerial = '12345';
    $.ajax({
        url: '@Url.Action("Foo", "Home")',
        type: 'POST',
        data: { mySerial: mySerial },
        success: function(result) {
            alert('success');
        }
    });
</script>

and the Foo action:

[HttpPost]
public ActionResult Foo(string mySerial)
{
    ... do something with the serial here
}

Another possibility is to perform a redirect if you don't want to use AJAX:

<script type="text/javascript">
    var mySerial = '12345';
    var fooUrl = '@Url.Action("Foo", "Home")';
    window.location.href = fooUrl + '?mySerial' + encodeURIComponent(mySerial);
</script>

Or maybe I misunderstood your question and you want to assign your javascript variable to some value coming from the view model? In this case:

<script type="text/javascript">
    var mySerial = @Html.Raw(Json.Encode(Model.MySerial));
</script>

Answer 2

you could pass value from your jquery to controller action like this ...

$(document).ready(function()
{
    var postdata  = { name: "your name", Age: "your age" };// you can pass control values 
    $.ajax({
        ur: /home/index,
        data: postdata,
        success: function(returndata)
             {
                // do something here for the return data...
              }
         });  
});

in your controller

public ActionResult PostedDAta(string myname, string myage)
{
            // do somethign here and return Json back to Jquery code
            return Json(data,JsonRequestBehaviour.AllowGet);  
}