如何使用 MVVM 和数据绑定从资源字典中绑定 <DrawingImage>

Question

请帮忙。我在 ResourceDictionary <DrawingImage x:Key="MyDrawingImage"> 中有一个 XAML 图像。如何使用 MVVM 将其绑定到 ？列表项有文字和图片。

public class MyItemViewModel {
    public string TextToDisplay { get; set; }
    
    public string? ImageToDisplay { get; set;}    ??????            
}

问题是，从资源字典中绑定图像最优雅的方法是什么？

            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border CornerRadius="10">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="3*" />
                                <RowDefinition Height="2*" />
                            </Grid.RowDefinitions>
                            <Image Source="{Binding ImageToDisplay}" ???????? />
                            <TextBlock Grid.Row="1" 
                                       Text="{Binding TextToDisplay}"/>

                        </Grid>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>

Answer 1

终于，我找到了答案。也许这对某人会派上用场：

public class DsItemViewModel {
    public DsItemViewModel(string name, string? drawingImageResourceKey = null) {
        Name = name;                
        if (drawingImageResourceKey != null)
            Image = Application.Current.FindResource(drawingImageResourceKey) as DrawingImage;
    }
    
    public string Name { get; }

    public DrawingImage? Image { get; }
}