VB中的MVC.NET-选择要Html.Dropdownlist的列表 [英] MVC.NET in VB - Select List to Html.Dropdownlist

问题描述

似乎我找到的大多数示例都是c#，所以在某些情况下，我会挠头...总而言之，我只是想将项目的selectList输出到一个下拉列表中在我看来:

Seems most of the examples I find are c#, so in some cases I'm left scratching my head... to make a long story short, I'm simply trying to output the selectList of items to a drop-down within my view:

我的ViewModel:

My ViewModel:

Imports System.Web
Imports Whitebox.UI


Namespace ViewModels
Public Class TFS_VModel
    Public Property AccType() As IEnumerable(Of LibAcctType)
        Get
            Return m_types
        End Get

        Set(ByVal value As IEnumerable(Of LibAcctType))
            m_types = value
        End Set
    End Property

    Private m_types As IEnumerable(Of LibAcctType)
End Class
End Namespace

我的控制器:

 Imports System
 Imports System.Collections.Generic
 Imports System.Linq
 Imports System.Web.Mvc
 Imports Whitebox.UI
 Imports Whitebox.UI.ViewModels

 <HandleError()> _
 Public Class TFSController
     Inherits Controller

     Dim _DB As New BlackBoxNormalizedEntities()

     Function TFSMain() As ActionResult
         Dim AccTypeList = (From m In _DB.LibAcctType Select m).ToList()

         Dim viewModel As New TFS_VModel()
         viewModel.AccType = AccTypeList

         Return View(viewModel)
     End Function


End Class

我现在要做的只是在我的视图中将我的"SelectList"输出到HTML.DROPDOWNLIST()中.任何帮助将不胜感激.逐步执行时，我的列表项会显示在"Return view(viewmodel)"手表中，但我仍然无法执行输出.

All I'm trying to do now is simply output my "SelectList" within a HTML.DROPDOWNLIST() in my view... any help would be greatly appreciate. When doing a step through, my list items are showing within my "Return view(viewmodel)" watch, but I'm stuck with performing the output.

推荐答案

您将需要在视图模型中添加一个包含所选帐户类型的属性:

You will need to add a property in your view model that will hold the selected account type:

Public Class TFS_VModel
    Public Property AccType() As IEnumerable(Of LibAcctType)
        Get
            Return m_types
        End Get

        Set(ByVal value As IEnumerable(Of LibAcctType))
            m_types = value
        End Set
    End Property

    Private m_selectedAccType As String
    Public Property SelectedAccType() As String
        Get
            Return m_selectedAccType
        End Get
        Set(ByVal value As String)
            m_selectedAccType = value
        End Set
    End Property

    Private m_types As IEnumerable(Of LibAcctType)
End Class

然后在您看来:

<%= Html.DropDownListFor(Function(x) x.SelectedAccType, New SelectList(Model.AccType, "Id", "Text", Model.SelectedAccType)) %>

下拉列表由 LibAcctType 的 AccType 集合构造而成，并且 Id 和 Text 应该是属性 LibAcctType 的形式.

The drop down list is constructed from the AccType collection of LibAcctType and Id and Text should be properties of this LibAcctType.

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