Hi All,

I have a simple contact form which was working until I upgraded to umbraco 7.8.1.

Now I am getting the following error: Cannot bind source type Umbraco.Web.Models.RenderModel to model type DeltaSports.Core.ViewModels.ContactFormViewModel.

<!-- Form -->
@Html.Partial("~/Views/Partials/Site/Contact/ContactForm.cshtml", new ContactFormViewModel())

ContactFormController.cs

public class ContactFormController : SurfaceController
    {
        [HttpPost]
        public async Task<ActionResult> Submit(ContactFormViewModel model)
        {
            if (!ModelState.IsValid)
                return CurrentUmbracoPage();

            await Mailer.Mail(model);
            return RedirectToCurrentUmbracoPage();
        }
    }

ContactFormViewModel.cs

public class ContactFormViewModel
    {
        [Required(ErrorMessage = "Name is required")]
        public string Name { get; set; }

        [Required(ErrorMessage = "Phone is required")]
        [EmailAddress(ErrorMessage = "Phone is required")]
        public string Phone { get; set; }

        [Required(ErrorMessage = "Email is required")]
        [EmailAddress(ErrorMessage = "Email is required")]
        public string Email { get; set; }

        [Required(ErrorMessage = "Message is required")]
        public string Message { get; set; }
    }

Please let me know what could make this working code break in 7.8.1.

Thanks Chirdeep

-------------UPDATED--------------------

Partial View

@model DeltaSports.Core.ViewModels.ContactFormViewModel


<div class="col-md-6 p-b-30">

    @using (Html.BeginUmbracoForm("Submit", "ContactForm", FormMethod.Post, new { name = "contact-form", id = "contact-form", css = "leave-comment" }))
    {
        <h4 class="m-text26 p-b-36 p-t-15">
            Send us your message
        </h4>

        <div class="bo4 of-hidden size15 m-b-20">
            @Html.TextBoxFor(m => m.Name, new { @class = "sizefull s-text7 p-l-22 p-r-22", placeholder = Html.NameFor(n => n.Name) })
            @Html.ValidationMessageFor(x => Model.Name, "Please enter a name", new { @class = "text-danger" })
        </div>

        <div class="bo4 of-hidden size15 m-b-20">
            @Html.TextBoxFor(m => m.Phone, new { @class = "sizefull s-text7 p-l-22 p-r-22", placeholder = Html.NameFor(n => n.Phone) })
            @Html.ValidationMessageFor(x => Model.Phone, "Please enter a phone number", new { @class = "text-danger" })
        </div>

        <div class="bo4 of-hidden size15 m-b-20">
            @Html.TextBoxFor(m => m.Email, new { @class = "sizefull s-text7 p-l-22 p-r-22", placeholder = Html.NameFor(n => n.Email) })
            @Html.ValidationMessageFor(x => Model.Email, "Please enter an email address", new { @class = "text-danger" })
        </div>

        @Html.TextAreaFor(m => m.Message, new { @class = "sizefull s-text7 p-l-22 p-r-22", cols = "30", rows = "7", placeholder = Html.NameFor(n => n.Message) })
        @Html.ValidationMessageFor(x => Model.Message, "Please enter a message", new { @class = "text-danger" })

        <div class="w-size25">
            <!-- Button -->
            <button class="flex-c-m size2 bg1 bo-rad-23 hov1 m-text3 trans-0-4">
                Send
            </button>
        </div>
    }
</div>