Refreshing multiple partial views in ASP.NET MVC

I broke it down into steps so you can follow/modify and add your partials like here. First, add 3 Partial Views, they have the same code like below,

@model int
<div class="container fluid">
    <h1>PartialDemo@(Model)</h1>
    <h3>The views will all update when you click update button below</h3>
</div>

DashboardWidgets.cshtml, the code like below, whatever your csthml page is

//<div class="row-fluid">
// <div class="col">
<div id="WidgetID_1" class="container">
    @Html.Partial("_PartialWidget1", 1)
</div>
<div id="WidgetID_2" class="container">
    @Html.Partial("_PartialWidget2", 2)
</div>
<div id="WidgetID_3" class="container">
    @Html.Partial("_PartialWidget3", 3)
</div>
<div id="WidgetID_4" class="container">
    @Html.Partial("_PartialWidget3", 4)
</div>
//</div> // the col
//</div> // the row

// lcik below button to update the partials above
// *****  One button will update them all like you wanted
<button type="button" onclick="UpdateMyWidgets()" class="btn btn-primary">Update All Partial View Views</button>

@section scripts{
    <script type="text/javascript">
        // this one button will update all your partials/widgets, you can add more partials in this function and just copy paste.
        function UpdateMyWidgets() {
            $.ajax({
                url: "@Url.Action("Widget1")",    // whom to call
                type: "POST",
                datatype: "HTML",
                success: function (data) {
                    $("#WidgetID_1").html(data);  // tell it which div to append on return
                }
            })
            $.ajax({
                url: "@Url.Action("Widget2")",
                type: "POST",
                datatype: "HTML",
                success: function (data) {
                    $("#WidgetID_2").html(data);
                }
            });
            $.ajax({
                url: "@Url.Action("Widget3")",
                type: "POST",
                datatype: "HTML",
                success: function (data) {
                    $("#WidgetID_3").html(data);
                }
            });
        }
    </script>
}

When click the "Update All Partial View Views" button, it will call "Update" method. If success, the return data will replace div's content

Backend action ajax request.

// these actions get called from the Update Buttons
public ActionResult Widget1()   
{
     return PartialView("_PartialWidget1", 11);
}
public ActionResult Widget2()
{
     return PartialView("_PartialWidget2", 21);
}
public ActionResult Widget3()
{
     return PartialView("_PartialWidget3", 31);
}