Login API C# Asp.net

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

namespace API_Demo.Models

{

public class LoginModel

{

public string Acc_Email_ID { get; set; }

public string Password { get; set; }

}

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using API_Demo.Models;

namespace API_Demo.Controllers

{

public class HomeController : Controller

{

public ActionResult Index()

{

LoginModel obj = new LoginModel();

return View(obj); //For bind the view

}

[HttpPost]

public ActionResult Index(LoginModel objuserlogin)

{

var display = Userloginvalues().Where(m => m.Acc_Email_ID == objuserlogin.Acc_Email_ID && m.Password == objuserlogin.Password).FirstOrDefault();

if (display != null)

{

ViewBag.Status = "CORRECT UserNAme and Password";

}

else

{

ViewBag.Status = "INCORRECT UserName or Password";

}

return View(objuserlogin);

}

public List Userloginvalues()

{

List objModel = new List();

objModel.Add(new LoginModel { Acc_Email_ID = "user1", Password = "password1" });

return objModel;

}

}

}

So, in this API i have checked the id and password offline... (i.e. already defined)...

But, i want check userid and password from sql table ...

So, please suggest me how to check from sql table....