Calling JavaScript Function from Controller in ASP.Net MVC

Dear All,

How to call jquery function from mvc controller

I tried the code you pointed to but still i wasnt succesfull. here is my code below.

@model BOL.tbl_categories_master
 
@{
    ViewBag.Title = "Add category";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
 
<h2>Add New Category</h2>
 
@using (Html.BeginForm("AddCategory","Category",FormMethod.Post))
{
    @Html.AntiForgeryToken()
     
    <div class="form-horizontal">
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.main_category,"Name", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.main_category, new { htmlAttributes = new { @class = "form-control",id="main_category" } })
                @Html.ValidationMessageFor(model => model.main_category, "", new { @class = "text-danger" })
            </div>
        </div>
 
        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" id="btnAdd" class="btn btn-primary" />
            </div>
        </div>
    </div>
}
 
<div>
    @Html.ActionLink("Back to List", "Index")
</div>
<script src="~/Scripts/jquery-1.10.2.js"></script>
<script src="~/Scripts/jquery.validate.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.js"></script>
<script src="~/Scripts/toastr.js"></script>
<link href="~/Content/toastr.css" rel="stylesheet" />
<script type="text/javascript">
    function ShowSuccessMsg() {
        toastr.success("Successfully Added.");
    };
    function ShowFailure(Msg) {
        toastr.error("Error:" + Msg);
    };
</script>
@if (ViewBag.JavaScriptFunction != null)
    {
    <script type="text/javascript">
        @Html.Raw(ViewBag.JavaScriptFunction)
    </script>
}

        public ActionResult AddCategory(tbl_categories_master CategoryInfo)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    objBs.CategoryBs.Insert(CategoryInfo);
                   return ViewBag.JavaScriptFunction = string.Format("ShowSuccessMsg();");
                    //return RedirectToAction("Create");
                }
                else
                {
 
                    return View("Create");
                }
            }
            catch (Exception ex)
            {
                ViewBag.JavaScriptFunction = string.Format("ShowFailure('{0}');", ex);
                return RedirectToAction("Create");
            }
        }