Action Method Error! [Answered]RSS

• • Reply
  Markus33

  Member

  225 Points

  397 Posts

  Action Method Error!

  Oct 18, 2018 08:21 PM|Markus33|LINK

  Can i get help with connecting to database through MVC method/ All of my internal code seems fine, model class, Persons controller, view! But yet and still cant figure why i get an error. I am using EF  ado model.

  PersonsController

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Web;
  using System.Web.Mvc;
  using AndrewProject.Models;
  using System.Reflection;

  namespace AndrewProject.Controllers
  {
  public class PersonController : Controller
  {

  
  // GET: Person
  //List<Person> _db = new List<Person>();
  private Person _db = new Person();

  
  //mvcappdb _db = new mvcappdb();
  public ActionResult Index()
  {

  return View(_db.Person.ToList());    //error code..."
  }
  //Get:Student
  
  // List<Person> lstper = new List<Person>()
  //// var person = new List<Person>
  //{
  // new Person () { PersonId= 1001, Age = 28, FirstName = "Bob", LastName = "Chris" , City = "Houston"},
  // new Person () { PersonId= 1002, Age = 35, FirstName = "Meech", LastName = "Gavins", City = "Boston"},
  // new Person () { Age = 35, FirstName = "Shannon", LastName = "Moore", City = "Denver"}
  // };
  // //return View("Index", person);
  // return View(lstper);
  
  }
  }

  Index view

  @model IEnumerable<AndrewProject.Models.Person>

  @{
  ViewBag.Title = "Index";
  }

  <h2>Index</h2>

  <p>
  @Html.ActionLink("Create New", "Create")
  </p>
  <table class="table">
  <tr>
  <th>
  @Html.DisplayNameFor(model => model.Age)
  </th>
  <th>
  @Html.DisplayNameFor(model => model.FirstName)
  </th>
  <th>
  @Html.DisplayNameFor(model => model.LastName)
  </th>
  <th>
  @Html.DisplayNameFor(model => model.City)
  </th>
  <th></th>
  </tr>

  @foreach (AndrewProject.Models.Person personid in Model) {
  <tr>
  <td>
  @Html.DisplayFor(modelItem => personid.Age)
  </td>
  <td>
  @Html.DisplayFor(modelItem => personid.FirstName)
  </td>
  <td>
  @Html.DisplayFor(modelItem => personid.LastName)
  </td>
  <td>
  @Html.DisplayFor(modelItem => personid.City)
  </td>
  <td>
  @Html.ActionLink("Edit", "Edit", new { id=personid.PersonId }) |
  @Html.ActionLink("Details", "Details", new { id=personid.PersonId }) |
  @Html.ActionLink("Delete", "Delete", new { id=personid.PersonId })
  </td>
  </tr>
  }

  </table>

  Person Model

  //------------------------------------------------------------------------------

  namespace AndrewProject.Models
  {
  using System;
  using System.Collections.Generic;
  
  public partial class Person
  {
  public int PersonId { get; set; }
  public string Age { get; set; }
  public string FirstName { get; set; }
  public string LastName { get; set; }
  public string City { get; set; }
  }
  }

  Markus33
• • Reply
  mgebhard

  All-Star

  44401 Points

  19191 Posts

  Re: Action Method Error!

  Oct 18, 2018 08:42 PM|mgebhard|LINK

  What is the error?

  Is Person really the name of your DbContext?

  private Person _db = new Person();

  I recommend going through this Getting Started Tutorial to make sure you have EF setup correctly.

  https://docs.microsoft.com/en-us/aspnet/mvc/overview/getting-started/getting-started-with-ef-using-mvc/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application

• • Reply
  Markus33

  Member

  225 Points

  397 Posts

  Re: Action Method Error!

  Oct 18, 2018 08:52 PM|Markus33|LINK

  Okay i corrected the name of the connection string to Persons from Person!

  private Persons _db = new Persons();

  The error is in the return view of the ActionResult Index

  public ActionResult Index()
  {

  return View(_db.Person.ToList());   // cannot correct this piece of code.(Person)
  }

  I still receive following error!

  Severity Code Description Project File Line Suppression State
  Error CS1061 'Persons' does not contain a definition for 'Person' and no extension method 'Person' accepting a first argument of type 'Persons' could be found (are you missing a using directive or an assembly reference?) AndrewProject c:\users\andrew\documents\visual studio 2015\Projects\AndrewProject\AndrewProject\Controllers\PersonController.cs 24 Active

  Markus33
• • Reply
  mgebhard

  All-Star

  44401 Points

  19191 Posts

  Re: Action Method Error!

  Oct 18, 2018 10:28 PM|mgebhard|LINK

  I assume Persons is an entity not the DB context. Please go through the Getting started tutorial linked above.
• • Reply
  Yuki Tao

  Contributor

  3670 Points

  1431 Posts

  Re: Action Method Error!

  Oct 19, 2018 08:19 AM|Yuki Tao|LINK

  Hi Markus33,

  Markus33

  private Person _db = new Person();

  this line just create a instance of Person not a context.

  For example,you should code like below:

  private WebApplication1Context _db = new WebApplication1Context();

  Then Create the database context named WebApplication1Context and add a line,like:

   public DbSet<Person> Persons{ get; set; }

  Markus33

  return View(_db.Person.ToList());    //error code..."

  to:

  return View(_db.Persons.ToList());

  Best Regards.

  Yuki Tao

  MSDN Community Support
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.
  
• • Reply
  Markus33

  Member

  225 Points

  397 Posts

  Re: Action Method Error!

  Oct 19, 2018 02:33 PM|Markus33|LINK

  Thanks Yuki Tao. I managed to fix the problem so much appreciative! Markus.

  Markus33