Update password for user account in mvc 5 - asp.net-mvc

Question

I'm currently working on user account and so far i've managed to work upon register and login panel with email confirmation process. Here i'm stuck in forget password option. I'm using ado.net entity framework. All i have to do is to change password for the registered email. This is what i've done so far.
Note: getting the error in controller action method
the entity type is not part of the model for the current context
Edit
I have a table named registration attached to the DBContext class. And i'm trying to update the records (particularly the password field) for the forger password option. I made the property class UpdateAcccount.cs with validation as attached below. In order to update the password, I retrieved the row matching with email id. And then transferring the updated password in the database.
This time i'm getting the error of "password does not match" although there's no field of confirm password in the database(registration table) + i even tried to use bind(exclude) attribute for confirm password but that didn't work either.
Controller class
[HttpPost]
public ActionResult UpdateAccount(UpdateAccount account)
{
string message = "";
bool status = false;
if (ModelState.IsValid)
{
account.Password = Crypto.Hash(account.Password);
account.ConfirmPassword = Crypto.Hash(account.ConfirmPassword);
using (TravelGuide1Entities entity = new TravelGuide1Entities())
{
try
{
var v = entity.Registrations.Where(a => a.Email == account.Email).FirstOrDefault();
if (v != null)
{
v.Password = account.Password;
entity.Entry(v).State = System.Data.Entity.EntityState.Modified;
entity.SaveChanges();
return RedirectToAction("Login");
}
}
catch(Exception e)
{
}
}
}
return View();
}
UpdateAccount.cs
public class UpdateAccount
{
[Display(Name = "Email")]
[Required(AllowEmptyStrings = false, ErrorMessage = "Email id required")]
public string Email { get; set; }
[Display(Name = "New Password")]
[Required(AllowEmptyStrings = false, ErrorMessage = "Password required")]
[DataType(DataType.Password)]
[MinLength(6, ErrorMessage = "Minimum 6 character required")]
public string Password { get; set; }
[Display(Name = "Confirm Password")]
[DataType(DataType.Password)]
[Compare("Password", ErrorMessage = "Password do not match")]
public string ConfirmPassword { get; set; }
}
UpdateAccount.cshtml
#model Travel.Models.UpdateAccount
#{
ViewBag.Title = "UpdateAccount";
}
<h2>UpdateAccount</h2>
#using (Html.BeginForm())
{
#Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>UpdateAccount</h4>
<hr />
#Html.ValidationSummary(true, "", new { #class = "text-danger" })
<div class="form-group">
#Html.LabelFor(model => model.Email, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.Email, new { htmlAttributes = new { #class = "form-control" } })
#Html.ValidationMessageFor(model => model.Email, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(model => model.Password, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.Password, new { htmlAttributes = new { #class = "form-control" } })
#Html.ValidationMessageFor(model => model.Password, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
#Html.LabelFor(model => model.ConfirmPassword, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.ConfirmPassword, new { htmlAttributes = new { #class = "form-control" } })
#Html.ValidationMessageFor(model => model.ConfirmPassword, "", new { #class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
<div>
#Html.ActionLink("Back to List", "Index")
</div>
#section Scripts {
#Scripts.Render("~/bundles/jqueryval")
}