在asp.net web mvc项目中使用uploadify插件的后台代码怎么写啊，前端代码好写，js也好写，就缺后台代码了

简单的cshtml代码：

@{
    ViewData["Title"] = "Home Page";
}
@section Header{
    <link href="~/js/uploadify.css" rel="stylesheet" />
    <script src="~/js/jquery-3.3.1.min.js"></script>
    <script src="~/js/jquery.uploadify.min.js"></script>

    <script type="text/javascript">
        $(function () {
            $('#file_upload').uploadify({
                'swf': '@Url.Content("~/js/uploadify.swf")',
                'uploader': 'Home/upload'
            });
        });
    </script>
}