Why is my form validation not firing? - asp.net-mvc

Question

I am building a Form in my view based on a View Model. the View model has [Required] on every field and Validation rules, but when checking the Model.IsValid it keeps coming back true even when all of the form fields are blank or null. Here is the View:
#model CommunityWildlifeHabitat.ViewModel.CreateAdminViewModel
#{
ViewBag.Title = "CreateAdmin";
}
<h2>Create Admin</h2>
#using (Html.BeginForm("CreateAdmin", "Admin", FormMethod.Post, new { #class = "form-horizontal", role = "form" }))
{
#Html.AntiForgeryToken()
<div class="form-group">
#Html.LabelFor(m => m.Email, new { #class = "col-md-6 control-label" })
<div class="col-md-6">
#Html.TextBoxFor(m => m.Email, new { #class = "form-control" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(m => m.FirstName, new { #class = "col-md-6 control-label" })
<div class="col-md-6">
#Html.TextBoxFor(m => m.FirstName, new { #class = "form-control" })
#Html.ValidationMessageFor(m => m.FirstName, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(m => m.LastName, new { #class = "col-md-6 control-label" })
<div class="col-md-6">
#Html.TextBoxFor(m => m.LastName, new { #class = "form-control" })
#Html.ValidationMessageFor(m => m.LastName, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(m => m.Password, new { #class = "col-md-6 control-label" })
<div class="col-md-6">
#Html.PasswordFor(m => m.Password, new { #class = "form-control" })
#Html.ValidationMessageFor(m => m.Password, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(m => m.ConfirmPassword, new { #class = "col-md-6 control-label" })
<div class="col-md-6">
#Html.PasswordFor(m => m.ConfirmPassword, new { #class = "form-control" })
#Html.ValidationMessageFor(m => m.ConfirmPassword, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-5 col-md-6">
<input type="submit" class="btn btn-habitat" value="Create Admin" />
</div>
</div>
}
Here is my ViewModel
public class CreateAdminViewModel
{
[Required]
[EmailAddress]
[Display(Name = "Email")]
public string Email { get; set; }
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Confirm password")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string ConfirmPassword { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
Here is the Controller get and post
[Authorize]
public ActionResult CreateAdmin(int? id)
{
var model = new CreateAdminViewModel();
if (id == null) { return RedirectToAction("Index", "Communities"); }
if (User.Identity.IsAuthenticated)
{
var userId = User.Identity.GetUserId();
var superUser = db.CommunityTeams.Where(x => x.UserId == userId && x.RoleId == 4).Any();
// If User is not a SuperUser (Administrator)
if (superUser == false)
return RedirectToAction("Index", "Communities");
}
return View(model);
}
[Authorize]
[HttpPost]
public ActionResult CreateAdmin(FormCollection fc)
{
var model = new CreateAdminViewModel();
model.Email = fc["Email"];
model.FirstName = fc["FirstName"];
model.LastName = fc["LastName"];
model.Password = fc["Password"];
model.ConfirmPassword = fc["ConfirmPassword"];
if (ModelState.IsValid)
{ }
return RedirectToAction("index", "Admin");
}

Answer 1

On your HttpPost you have a model type of FormCollection
public ActionResult CreateAdmin(FormCollection fc)
Should it be of your model type? Else always true state?
public ActionResult CreateAdmin(CreateAdminViewModel fc)