I have this small login function

    [HttpPost]
    public ActionResult ValidateLogin(RCS_CustomerContact model)
    {
        Session["userID"] = null;
        using (RCS.Models.SAPContext context = dbContext)
        {
            if (model.E_MailL != null && model.Password != null)
            {
                RCS_CustomerContact user = context.CustomerContact.Where(a => a.E_MailL == model.E_MailL && a.Password == model.Password).FirstOrDefault();
                if (user != null)
                {
                    Session["userID"] = user.ID;
                    Response.Redirect("/login/profile/");
                }
                else
                {
                    TempData["LoginMessage"] = "Invalid user/password";
                    Session["userID"] = null;
                }
            }
            else
            {
                TempData["LoginMessage"] = "Fill username and password";
                Session["userID"] = null;
            }
        }
        return RedirectToCurrentUmbracoPage();
    }

And this partial

@model RCS.Models.RCS_CustomerContact

@using (Html.BeginUmbracoForm("ValidateLogin", "Login", FormMethod.Post))
{
<section>
    <div>
        <table>
            <tr>
                <td>@Html.LabelFor(a => a.E_MailL):</td>
                <td>
                    @Html.TextBoxFor(a => a.E_MailL)
                </td>
            </tr>
            <tr>
                <td>@Html.LabelFor(a => a.Password):</td>
                <td>@Html.TextBoxFor(a => a.Password)</td>
            </tr>
        </table>
        <input type="submit" value="Login">**

        @TempData["LoginMessage"]


    </div>
</section>
}

The user goes to www.mysite.com/login/ Here he sees the login partial, fills it out and login.

This works perfectly fine. No problem what so ever... Subpages like "profile" and "orderhistory" also works fine.

Now I need to add a custom route to /login/order/[orderNum] so the user can click an order in "history" and see the details.

So I added this Route (I also have a route to product details)

public class CustomRoutes: ApplicationEventHandler
{
    protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
    {
        RouteTable.Routes.MapUmbracoRoute(
            "ProductDetails",
            "Product/{itemInfo}",
            new
            {
                controller = "Product",
                action = "ProductDetails",
                itemID = UrlParameter.Optional
            },
            new FindProductRouteHandler()
        );
        RouteTable.Routes.MapUmbracoRoute(
            "OrderDetails",
            "login/order/{orderNum}",
            new
            {
                controller = "Login",
                action = "OrderDetails",
                itemID = UrlParameter.Optional
            },
            new FindOrderRouteHandler()
        );
        base.ApplicationStarting(umbracoApplication, applicationContext);

    }
}


public class FindOrderRouteHandler : UmbracoVirtualNodeRouteHandler
{
    protected override IPublishedContent FindContent(RequestContext requestContext, UmbracoContext umbracoContext)
    {

        var productPage = umbracoContext.ContentCache
            .GetAtRoot()
            .First()
            .FirstChild(a => a.Name.ToLower() == "login")
            .FirstChild(a => a.Name.ToLower() == "orderdetail");

        return productPage;
    }
}

So now I have a route, and can browse to /login/order/123 and see the order. Perfect...

But now my login doesn't work. What?? I can go to /login/ and see the login form, but when I try to login I get this error:

Could not find a Surface controller route in the RouteTable for controller name Login

If I remove the route my login works again:

    //RouteTable.Routes.MapUmbracoRoute(
    //    "OrderDetails",
    //    "login/order/{orderNum}",
    //    new
    //    {
    //        controller = "Login",
    //        action = "OrderDetails",
    //        itemID = UrlParameter.Optional
    //    },
    //    new FindOrderRouteHandler()
    //);

Can someone tell me why? And what to do to fix it?

I am kind off new to Umbraco. Only worked with it for a few months.