Question

What is the simplest way to update textarea value without refreshing the whole page? Asynchronous method in controller will change textarea value, but how can I update the view? I’ve read about pushing updates using SignalR, would that kind of approach be helpful?

Answer 1

In your AjaxOptions specify a javascript method to call OnSuccess

        new AjaxOptions { OnSuccess = "UpdatePage(data)" })

Send back a JsonResult from your Action in the Controller

        return new JsonResult
        {
            Data = new
            {
                variable1 = value1,
                variable2 = value2,
                variable3 = value3
            },
            JsonRequestBehavior = JsonRequestBehavior.AllowGet
        };

And in the javascript method process the data you sent back

   function UpdatePage(data) {            
        $("input[name='UpdateMe1']").val(data.variable1);
        $("input[name='UpdateMe2']").val(data.variable2);
        $("#UpdateMe3").html(data.variable3);
    }