未在用户控件的列表框中显示图像

Question

这是我第一次在WPF中使用UserControl。以下是我的用户XAML和背景VB代码：

<UserControl x:Class="AddNewGenre" 
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      mc:Ignorable="d" d:DesignHeight="194" d:DesignWidth="405"> 
    <Grid> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="30" /> 
      <RowDefinition Height="130" /> 
     </Grid.RowDefinitions> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="72*" /> 
      <ColumnDefinition Width="333*" /> 
     </Grid.ColumnDefinitions> 

     <ListBox Name="GenreListBox" ItemsSource="{Binding}" 
       Grid.Row="1" Grid.Column="1"> 
      <ListBox.ItemsPanel> 
       <ItemsPanelTemplate> 
        <WrapPanel IsItemsHost="True" /> 
       </ItemsPanelTemplate> 
      </ListBox.ItemsPanel> 
      <ListBox.ItemTemplate> 
       <DataTemplate> 
        <Image Source="{Binding Value}" Width="128" Height="128" /> 
       </DataTemplate> 
      </ListBox.ItemTemplate> 
     </ListBox> 
    </Grid> 
</UserControl> 

代码文件：

Public Class AddNewGenre 
    Dim Result As HODLib.Classes.GenreClass 

    Public Sub New() 

     ' This call is required by the designer. 
     InitializeComponent() 

     ' Add any initialization after the InitializeComponent() call. 
     Me.DataContext = Result 
    End Sub 

    Private Sub UserControl_Loaded(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded 

     GenreListBox.ItemsSource = GlobalValues.ImageDictionary 
    End Sub 

End Class 

下面是一个得到GlobalValues.ImageDictionary代码：

Namespace GlobalValues 
    Module CurrentVariables 
     Public ImageDictionary As Concurrent.ConcurrentDictionary(Of String, BitmapImage) 

     Public Sub Initialize() 
      ImageDictionary = New Concurrent.ConcurrentDictionary(Of String, BitmapImage) 

      'try get resources 
      GetAllBitmaps() 

     End Sub 

     Public Sub GetAllBitmaps() 
      Try 
       ImageDictionary.Clear() 
       With ImageDictionary 
        .TryAdd("Box", New BitmapImage(New Uri("Resources\Box.png", UriKind.Relative))) 
        .TryAdd("Tri", New BitmapImage(New Uri("Resources\Tri.png", UriKind.Relative))) 
       End With 
      Catch ex As Exception 

      End Try 
     End Sub 

    End Module 
End Namespace 

的问题是，图像没有显示在图像列表框中，只有黑色的项目正在显示。你能告诉我在这里做了什么错事吗？

Answer 1

最后发现这个职位一个答案：Accessing Build Action Resource type files在我来说，我做了价值格式“/HOD;component/Resources/Box.png”的字符串，而不是在BitmapImage的

Answer 2

从xaml的列表框中删除ItemsSource，因为您已将其设置在yur代码隐藏文件中。

<ListBox Name="GenreListBox" 
       Grid.Row="1" Grid.Column="1">