I just started playing with Umbraco 7.6.5. today. I tried creating a contact form via MVC but I am getting the following message when I try to load my page in the browser...

A route named 'SubmitForm' could not be found in the route collection.
Parameter name: name

My ContactForm view looks like this...

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@{
    Layout = "Master.cshtml";
}

<div class="container">
    @{ Html.RenderAction("RenderForm", "ContactForm");}
</div>

My _Contact partial view looks like this:

   @inherits UmbracoViewPage<umb00.Models.ContactForm>

    @using (Html.BeginRouteForm("SubmitForm", "ContactForm", FormMethod.Post))
    {

        @Html.AntiForgeryToken()
        @Html.ValidationSummary()

        @Html.LabelFor(m => m.FirstName)
        @Html.TextBoxFor(m => m.FirstName)
        //@Html.ValidationMessageFor(m => m.FirstName)

        @Html.LabelFor(m => m.LastName)
        @Html.TextBoxFor(m => m.LastName)

        @Html.LabelFor(m => m.EmailAddress)
        @Html.TextBoxFor(m => m.EmailAddress)

        @Html.LabelFor(m => m.Message)
        @Html.TextAreaFor(m => m.Message)

        <button>Submit</button>
    }

and my ContactFormController looks like this:

using Umbraco.Web.Mvc;
using System.Web.Mvc;
using umb00.Models;
using System.Net.Mail;

namespace umb00.Controllers
{
    public class ContactFormController : SurfaceController
    {
        public const string PARTIAL_VIEW_FOLDER = "~/Views/Partials/Contact/";
        public ActionResult RenderForm()
        {
            return PartialView(PARTIAL_VIEW_FOLDER + "_Contact.cshtml");
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult SubmitForm(ContactForm model)
        {
            if (ModelState.IsValid)
            {
                //send an email
                SendEmail(model);
                return RedirectToCurrentUmbracoPage();
            }
            //if not valid go back to the page
            return CurrentUmbracoPage();
        }

        private void SendEmail(ContactForm model)
        {
            MailMessage message = new MailMessage(model.EmailAddress, "admin@umbraco.00.local");
            message.Subject = string.Format("Enquiry from {0} {1} - {2}", model.FirstName, model.LastName, model.EmailAddress);
            message.Body = model.Message;
            SmtpClient client = new SmtpClient("127.0.0.1", 25);
            client.Send(message);
        }
    }
}

Any advice would be great thanks!