// ReturnUrl #region ReturnUrl public static MvcHtmlString ReturnUrl(this HtmlHelper htmlHelper, string name = "ReturnUrl") { string returnUrl = null; var req = htmlHelper.GetHttpRequest(); if (req != null) { returnUrl = req.FormData.Get(name) ?? req.QueryString.Get(name) ?? req.Headers.Get("Referer"); } return(Hidden(htmlHelper, name, returnUrl)); }