// 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));
}