PM> Install-Package Microsoft.jQuery.Unobtrusive.Ajax

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

        $(document).ready(function () {
            var securityToken = $('[name=__RequestVerificationToken]').val();
            $('body').bind('ajaxSend', function (elm, xhr, s) {
                if (s.type == 'POST' && typeof securityToken != 'undefined') {
                    if (s.data.length > 0) {
                        s.data += "&__RequestVerificationToken=" + encodeURIComponent(securityToken);
                    }
                    else {
                        s.data = "__RequestVerificationToken=" + encodeURIComponent(securityToken);
                    }
                }
            });
        });

//--------------انتخاب خودکار لینک‌های بالای صفحه به ازای صفحه جاری
$(document).ready(function () {
    $("#headermenu a").each(function () {
        var $a = $(this);
        var href = $a.attr("href");
        if (href && (location.pathname.toLowerCase() == href.toLowerCase())) {
            //صفحه جاری را یافتیم
            $a.css({
                "color": "Yellow",
                "border-bottom": "1px solid"                 
             });
        }
    });
});

public class Upload : IHttpHandler {
    public void ProcessRequest (HttpContext context) {
        HttpPostedFile uploads = context.Request.Files["upload"];
        //... save the file
        // return context.Response.Write(...)
        // and then  context.Response.End();