crud operation in asp.net mvc using entity framework database first code example

Example 1: crud operation without entity framework in mvc

using System.Web.Mvc;using CRUDinMVC.Models; namespace CRUDinMVC.Controllers{    public class StudentController : Controller    {                // 1. *************RETRIEVE ALL STUDENT DETAILS ******************        // GET: Student        public ActionResult Index()        {            StudentDBHandle dbhandle = new StudentDBHandle();            ModelState.Clear();            return View(dbhandle.GetStudent());        }         // 2. *************ADD NEW STUDENT ******************        // GET: Student/Create        public ActionResult Create()        {            return View();        }         // POST: Student/Create        [HttpPost]        public ActionResult Create(StudentModel smodel)        {            try            {                if (ModelState.IsValid)                {                    StudentDBHandle sdb = new StudentDBHandle();                    if (sdb.AddStudent(smodel))                    {                        ViewBag.Message = "Student Details Added Successfully";                        ModelState.Clear();                    }                }                return View();            }            catch            {                return View();            }        }         // 3. ************* EDIT STUDENT DETAILS ******************        // GET: Student/Edit/5        public ActionResult Edit(int id)        {            StudentDBHandle sdb = new StudentDBHandle();            return View(sdb.GetStudent().Find(smodel => smodel.Id == id));        }         // POST: Student/Edit/5        [HttpPost]        public ActionResult Edit(int id, StudentModel smodel)        {            try            {                StudentDBHandle sdb = new StudentDBHandle();                sdb.UpdateDetails(smodel);                return RedirectToAction("Index");            }            catch            {                return View();            }        }         // 4. ************* DELETE STUDENT DETAILS ******************        // GET: Student/Delete/5        public ActionResult Delete(int id)        {            try            {                StudentDBHandle sdb = new StudentDBHandle();                if (sdb.DeleteStudent(id))                {                    ViewBag.AlertMsg = "Student Deleted Successfully";                }                return RedirectToAction("Index");            }            catch            {                return View();            }        }    }}

Example 2: crud operation without entity framework in mvc

<connectionStrings>    <add name="StudentConn" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=StudentDB;Integrated Security=True;Pooling=False"/>  </connectionStrings>