how do check if code entered for password reset is the same as the one sent in sms.

public class GenerateCodeBusiness
    {
        public string CreateRandomPassword(int PasswordLength)
        {
            string _allowedChars = "0123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ";
            Random randNum = new Random();
            char[] chars = new char[PasswordLength];
            int allowedCharCount = _allowedChars.Length;
            for (int i = 0; i < PasswordLength; i++)
            {
                chars[i] = _allowedChars[(int)((_allowedChars.Length) * randNum.NextDouble())];
            }
            return new string(chars);
        }
    }
}

[HttpPost]
       [AllowAnonymous]
       [ValidateAntiForgeryToken]
       public async Task<ActionResult> PhoneReset(ForgotPasswordView model, string sms)
       {

           if (ModelState.IsValid)
           {
               var user = await UserManager.FindByEmailAsync(model.Email);
               // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
               // Send an email with this link
               if (user != null)
               {
                   //string code = await UserManager.GeneratePasswordResetTokenAsync(user.Id);
                   //var forgot = new ForgotPasswordBusiness();
                   //if(forgot.ForgotPassReset(model.cellNumber))
                   GenerateCodeBusiness gen = new GenerateCodeBusiness();
                   SendSmsBusiness objap = new SendSmsBusiness();
                   sms = "Your password reset code is " + gen.CreateRandomPassword(8);
                   objap.Send_SMS(model.cellNumber, sms);
                   await SignInAsync(user, isPersistent: false);
                   return RedirectToAction("ResetViaPhone", "Account");
               }
               else if (user == null)
               {
                   ModelState.AddModelError("", "The user does not exist");
                   return View();
               }
           }
           // If we got this far, something failed, redisplay form
           return View(model);
       }

// POST: /ResetPasswordViaPhone
     [HttpPost]
     [AllowAnonymous]
     [ValidateAntiForgeryToken]
     public async Task<ActionResult> ResetViaPhone(ResetViaPhoneView model)
     {
         if (ModelState.IsValid)
         {
             GenerateCodeBusiness gen = new GenerateCodeBusiness();

             var user = await UserManager.FindByNameAsync(model.Email);
             if (user == null  && model.code != gen.CreateRandomPassword(8))
             {
                 ModelState.AddModelError("", "No user found.");
                 return View();
             }
             IdentityResult result = await UserManager.ResetPasswordAsync(user.Id, model.code, model.New_Pass);
             if (result.Succeeded)
             {
                 return RedirectToAction("ResetPasswordConfirmation", "Account");
             }
             else
             {
                 AddErrors(result);
                 return View();
             }
         }
         // If we got this far, something failed, redisplay form
         return View(model);
     }

plate.Model.ResetViaPhoneView
@{
    ViewBag.Title = "Reset password";
    Layout = "~/Views/shared/_BootstrapLayout.basic.cshtml";
}
@using (Html.BeginForm("ResetViaPhone", "Account", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    @Html.AntiForgeryToken()
     <hr />
    @Html.ValidationSummary("", new { @class = "text-danger" })
   
    <div class="panel panel-default">
        <div class="panel-heading " style="background-color: green "></div>
        <div class="panel-body">
            <div class="form-group">
                @Html.LabelFor(model => model.code, new { @class = "col-md-2 control-label"  })
                <div class="col-md-10">
                    @Html.TextBoxFor(model => model.code, new { @class = "form-control" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Email, new { @class = "col-md-2 control-label" })
                <div class="col-md-10">
                    @Html.TextBoxFor(model => model.Email, new { @class = "form-control" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.New_Pass, new { @class = "col-md-2 control-label" })
                <div class="col-md-10">
                    @Html.TextBoxFor(model => model.New_Pass, new { @class = "form-control" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Confirm_Pass, new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.TextBoxFor(model => model.Confirm_Pass, new { @class = "form-control" })
                   @Html.ValidationMessageFor(model => model.Confirm_Pass)
                </div>
            </div>
        </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>