CODEWITHSUNDEEP
asp.netasp.net-mvcvb.netasp.net-mvc-3
Mark
Mark

Reputation: 7818

How to show a list in MVC

I'm trying to show a list of "roles" from the membership/role tables

My controller is:

' GET: /Admin/Index
Function Index() As ActionResult
    Dim model = New AdminRoles()
    model.Roles = Roles.GetAllRoles()
    Return View(model)
End Function

My model is:

Imports System.Data.Entity
Imports System.ComponentModel.DataAnnotations
Imports System.ComponentModel

Public Class AdminRoles
    Public Property Roles() As String()
End Class

Public Class AdminRolesDBContext
  Inherits DbContext
  Public Property AdminRole() As DbSet(Of AdminRoles)
End Class

My view is:

@ModelType IEnumerable(Of MPConversion.AdminRoles)
@Code
    ViewData("Title") = "Index"
End Code
<h2>Index</h2>
<p>    @Html.ActionLink("Create New", "Create")</p>
<table><tr><th>Role</th><th></th></tr>
@For Each item In Model
    Dim currentItem = item
    @<tr>
    <td>currentitem.Roles</td>
        <td>
            @*@Html.ActionLink("Edit", "Edit", New With {.id = currentItem.PrimaryKey}) |
            @Html.ActionLink("Details", "Details", New With {.id = currentItem.PrimaryKey}) |
            @Html.ActionLink("Delete", "Delete", New With {.id = currentItem.PrimaryKey})*@
        </td>
    </tr>
Next
</table>

However I get ther error:

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

Can anyone see where I'm going wrong?

Upvotes: 1

Views: 2290

Answers (2)

themarcuz
themarcuz

Reputation: 2583

simply use

@ModelType MPConversion.AdminRoles

and then

 @For Each item In Model.Roles

Your AdminRoles class contain some kind of collection returned by Roles.GetAllRoles(), but the object itself (AdminRoles) is not a collection, and doesn't implement IEnumerable at all.

Updated To optimize a bit:

Cotroller

Function Index() As ActionResult
    IEnumerable(Of String) allRoles = Roles.GetAllRoles() // modify the GetAllRoles method
    Return View(allRoles)
End Function

View:

@ModelType IEnumerable(Of String)
@Code
    ViewData("Title") = "Index"
End Code
<h2>Index</h2>
<p>    @Html.ActionLink("Create New", "Create")</p>
<table><tr><th>Role</th><th></th></tr>
@For Each item In Model
    <tr>
    <td>@item</td>
    @* Commented part deleted for brevity *@
    </tr>
Next
</table>

Upvotes: 1

Machinegon
Machinegon

Reputation: 1885

Your class adminRoles does not implement IEnumerable.

Upvotes: 1

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