How to pass data from index view to edit view

Question

when click edit link in index page it give me error The model item passed into the dictionary is of type 'System.Data.Entity.DynamicProxies.Employee_2EF71CC17A29BA91B02BC5CDB0EE5AF82D363EEF7E174A21C9546772913AA929', but this dictionary requires a model item of type 'WebCourse.Models.Customemployee'. I have custom model Customemployee

namespace WebCourse.Models Customemployee
{
    public class Customemployee
    {

//represent employee table in database

     public string Name { get; set; }
        public int Salary { get; set; }
        public string Email { get; set; }
        public int DistrictId { get; set; }
//represent employee course table in database
       public List<EmployeeCourse> Courses { get; set; }

//represent employee language table in database

       public List<EmployeeLangage> Langs { get; set; }

    }

}

and my controller empcourse

using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using WebCourse.Models;
using System.Data.Entity;
namespace WebCourse.Controllers
{
    public class empcourseController : Controller
    {
        mycourseEntities db = new mycourseEntities();
        // GET: empcourse
        public ActionResult Index()
        {
            var query = db.Employees.ToList().Select(p => new EmpInfo
            {
                Id = p.Id,
                Name = p.Name,
                Salary = Convert.ToInt32( p.Salary),
                Email = p.Email,
                DistrictName = p.Destrict.DistrictName,
                CityName = p.Destrict.City.CityName,
                CountryName = p.Destrict.City.Country.CountryName,
                CourseNames = p.EmployeeCourses.Select(t => t.Course.CourseName).ToList(),
                LanguageName = p.EmployeeLangages.Select(t => t.Language.LnaguageName).ToList(),
                levelName = p.EmployeeLangages.Select(t => t.Level.LevelName).ToList(),
                CourseName = string.Join(",", p.EmployeeCourses.Select(t => t.Course.CourseName).ToList())
            });

            return View(query);

        }
        public ActionResult Create()
        {
            ViewBag.CountryId = new SelectList(db.Countries, "Id", "CountryName");
            ViewBag.LanaguageId = new SelectList(db.Languages.ToList(), "Id", "LnaguageName");
            ViewBag.LevelId = new SelectList(db.Levels.ToList(), "Id", "LevelName");
            ViewBag.CourseId = new SelectList(db.Courses.ToList(), "Id", "CourseName");
            return View();
        }
        public ActionResult Edit(int id)
        {
//how to pass data from index view to edit view
            Employee old = db.Employees.Find(id);
            return View(old);

        }
      [HttpPost]
        public ActionResult Create(Customemployee cemp)
        {


            using (mycourseEntities db = new mycourseEntities())
            {
                Employee E = new Employee { Name = cemp.Name, Salary = cemp.Salary, Email = cemp.Email, DistrictId = cemp.DistrictId };
                foreach (var i in cemp.Courses)
                {

                    E.EmployeeCourses.Add(i);
                    db.SaveChanges();
                }
                foreach (var i in cemp.Langs)
                {

                    E.EmployeeLangages.Add(i);
                    db.SaveChanges();
                }
                db.Employees.Add(E);
                db.SaveChanges();
            }
            return View();
        }
        public JsonResult getcitybyid(int id)
        {
            db.Configuration.ProxyCreationEnabled = false;
            return Json(db.Cities.Where(a => a.CountryId == id), JsonRequestBehavior.AllowGet);
        }
        public JsonResult getdistrictbyid(int id)
        {
            db.Configuration.ProxyCreationEnabled = false;
            return Json(db.Destricts.Where(a => a.CityId == id), JsonRequestBehavior.AllowGet);
        }
    }
}

the error show here in code

public ActionResult Edit(int id)
            {
    //how to pass data from index view to edit view
                Employee old = db.Employees.Find(id);
                return View(old);

            }

How to pass data from index view that show data to edit view

Answer 1

From the error message, it looks like your Edit view is strontly typed to Customemployee type. That means you should be passing an object of Customemployee class from your Edit action method to this view. But your current code is sending an object of Employee type.

So update your Edit action method to send the correct object to the view.

public ActionResult Edit(int id)
{
   Employee old = db.Employees.Find(id);
   if(old!=null)
   {
     var vm = new CustomEmployee();
     vm.Name = old.Name;
     vm.Email = old.Email;
     // Assign other property values as needed.
     return View(vm);
   }  
   return Content("No employees found for the Id passed"); 
   // to do : Ideally return a "NotFound" view
}