.NET danna un warenko

[NJack]

.NET Routing wala,

man menna me route(url) ekata giyama

http://localhost:50383/Customers/Details

mata menna me wage error ekak enawa,

[ArgumentException: The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Details(Int32)' in 'Vidly.Controllers.CustomersController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters]

menna me route ekata giyama menna me wage error ekak enawa

http://localhost:50383/Customers/Details/1

The model item passed into the dictionary is of type 'Vidly.Models.Customer', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[Vidly.Models.Customer]'.

menna mage code tika

CustomerController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Vidly.Models;

namespace Vidly.Controllers
{
    public class CustomersController : Controller
    {
        // GET: Customers
        public ActionResult Index() {
            var customers = GetCustomers();

            return View(customers);
        }


        public ActionResult Details(int id)
        {

            var customer = GetCustomers().SingleOrDefault(c => c.Id == id);
            if (customer == null) {
                return HttpNotFound();
            }

            return View(customer);
        }

        private IEnumerable<Customer> GetCustomers() {
            return new List<Customer>
            {
                new Customer { Id = 1, Name = "John Smith" },
                new Customer {Id =2, Name="Mary Kom"}

            };
        }



    }
}

Details.cshtml

@model IEnumerable<Vidly.Models.Customer>

@{
    ViewBag.Title = "Customer";
    Layout = "~/Views/Shared/_Layout.cshtml";
}



@if (!Model.Any())
{
    <p>Please endter a valid URL</p>
}
else
{
    <table class="table table-bordered table-hover">

        <thead>

            <tr>

                <th>Customer</th>

            </tr>

        </thead>

        <tbody>
            @foreach (var customer in Model)
            {

                <tr>

                    <td>@Html.ActionLink(customer.Name, "Details", "Customers", new { id = customer.Id }, null)</td>
                    <li>

                </tr>
            }

        </tbody>

    </table>
}

RoutingConfig.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace Vidly
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");



            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );
        }
    }
}

mokada scene eka kiyala balapnko, Stackoverflow dammama un duplicate kiyala ain kala

 

[NJack]

bump

+

 

[deltamoon]

int id === > string id karala balapan...

 

[NJack]

int id === > string id karala balapan...

ethakota data type error ekak enawa ++

 

[NJack]

bump

 

[mithunmaxxx]

up

https://stackoverflow.com/questions...ictionary-is-of-type-but-this-dictionary-requ

 

[deltamoon]

ethakota data type error ekak enawa ++

public ActionResult Details(string id)
{

var custId= int.parse(id);

var customer = GetCustomers().SingleOrDefault(c => c.Id == custId);
if (customer == null) {
return HttpNotFound();
}

return View(customer);
}

 

[nalaka526]

Controller eke tiyana Method tunata debug points daala balanna call wenne mona welawal waladaida kiyala

1st issue eka enne view ekata map wechcha method ekak controller eke nethi nisa wenna one

Me method eka controller ekata daala balanna:

public ActionResult Details() {
            var customers = GetCustomers();

            return View(customers);
        }

PM me if you need more help

 

[Jolly_Roger]

http://localhost:50383/Customers/Details/1

me URL eka gahuwama ube method eka call wela customer obect ekak return wenawa View ekata.
habai View eke Model eka widiyata thiyenne "IEnumerable<Vidly.Models.Customer>"
a kiyanne uba Customer List ekak return karanna ona controller action eken. habai logic eke widiyata nam eka Id ekata inne 1 customer nisa View eke uda mehema dapan

@model Vidly.Models.Customer

 

[saja]

.NET Routing wala,

man menna me route(url) ekata giyama

http://localhost:50383/Customers/Details

mata menna me wage error ekak enawa,

[ArgumentException: The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Details(Int32)' in 'Vidly.Controllers.CustomersController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters]

(

You are expecting an id parameter in your URL but you aren't supplying one. Such as:

http://localhost:50383/Customers/Details/12<< missing

 

[rosharavinda]

mcn umbe details view ekak mama dakke na. ekata mehema daanna

@model TestApp.Models.Customer

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
    <h4>Customer</h4>
    <hr />
    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.Name)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.Name)
        </dd>

    </dl>
</div>
<p>
    @Html.ActionLink("Edit", "Edit", new { id = Model.ID }) |
    @Html.ActionLink("Back to List", "Index")
</p>

Index view ekata mehema daaanna

@model IEnumerable<TestApp.Models.Customer>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

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

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.ID }) |
            @Html.ActionLink("Details", "Details", new { id=item.ID }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.ID })
        </td>
    </tr>
}

</table>

Aniwa hariyai. Try karala kiyanne. Oya CSS classnam bootstrap ewa mcn. ewa ain karanna oyata one nam. Anith eka mcn as a best practice controllers PLURAL wain liyanna epa. CustomersController newei CustomerController. That's the microsoft standard. Ewath dan danma purudu wenna.

 

[NJack]

public ActionResult Details(string id)
{

var custId= int.parse(id);

var customer = GetCustomers().SingleOrDefault(c => c.Id == custId);
if (customer == null) {
return HttpNotFound();
}

return View(customer);
}

wada na bn

Controller eke tiyana Method tunata debug points daala balanna call wenne mona welawal waladaida kiyala

1st issue eka enne view ekata map wechcha method ekak controller eke nethi nisa wenna one

Me method eka controller ekata daala balanna:

public ActionResult Details() {
            var customers = GetCustomers();

            return View(customers);
        }

PM me if you need more help

balanna one

mcn umbe details view ekak mama dakke na. ekata mehema daanna

@model TestApp.Models.Customer

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
    <h4>Customer</h4>
    <hr />
    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.Name)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.Name)
        </dd>

    </dl>
</div>
<p>
    @Html.ActionLink("Edit", "Edit", new { id = Model.ID }) |
    @Html.ActionLink("Back to List", "Index")
</p>

Index view ekata mehema daaanna

@model IEnumerable<TestApp.Models.Customer>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

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

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.ID }) |
            @Html.ActionLink("Details", "Details", new { id=item.ID }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.ID })
        </td>
    </tr>
}

</table>

Aniwa hariyai. Try karala kiyanne. Oya CSS classnam bootstrap ewa mcn. ewa ain karanna oyata one nam. Anith eka mcn as a best practice controllers PLURAL wain liyanna epa. CustomersController newei CustomerController. That's the microsoft standard. Ewath dan danma purudu wenna.

DisplayNameFor kiyana function eka mokakda?

 

[helplesser]

These are mvc basics. Learn before you coding . You cant pass ienumerqble to the view when you accepting single object as view model.

 

[rosharavinda]

mcn poddak therune naththam oya google karala balanna.

DisplayNameFor kiyanne HTML helper ekak :
https://stackoverflow.com/questions...-for-displayfor-and-displaynamefor-in-asp-net

oyata oyage thiyena widiyatama onenam karanna one display.cshtml eke

@model TestApp.Models.Customer

@if (Model == null)
{
<p>Please endter a valid URL</p>
}

<td>@Html.ActionLink(Model.Name, "Details", "Customers", new { ID = Model.ID }, null)</td>

onna ohoma karala balanna hariyai

 

[NJack]

mcn umbe details view ekak mama dakke na. ekata mehema daanna

@model TestApp.Models.Customer

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
    <h4>Customer</h4>
    <hr />
    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.Name)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.Name)
        </dd>

    </dl>
</div>
<p>
    @Html.ActionLink("Edit", "Edit", new { id = Model.ID }) |
    @Html.ActionLink("Back to List", "Index")
</p>

Index view ekata mehema daaanna

@model IEnumerable<TestApp.Models.Customer>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

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

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.ID }) |
            @Html.ActionLink("Details", "Details", new { id=item.ID }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.ID })
        </td>
    </tr>
}

</table>

Aniwa hariyai. Try karala kiyanne. Oya CSS classnam bootstrap ewa mcn. ewa ain karanna oyata one nam. Anith eka mcn as a best practice controllers PLURAL wain liyanna epa. CustomersController newei CustomerController. That's the microsoft standard. Ewath dan danma purudu wenna.

Ade badu wada bn thanks a lot

 

[NJack]

Up

These are mvc basics. Learn before you coding . You cant pass ienumerqble to the view when you accepting single object as view model.

Thanks

 

[NJack]

Thanks hamotama