wpfmvvm-有沒有辦法根據模型中的屬性數量以編程方式創建文本框并系結到它們中的每一個？

我有多個具有多個屬性的物件，我想根據屬性值顯示或隱藏（或在需要時創建）。

例如： 型號：

     public class InputModel
{
    public string Name { get; set; }
    public string Id { get; set; }
    public string Type { get; set; }
    public bool Required { get; set; }
    public int Dpi { get; set; }
    public string Data { get; set; }
    public List<ColorModel> Filter { get; set; }
    public List<RenderModel> Render { get; set; }
    public List<LayoutModel> Layout { get; set; }
}

看法：

      <ItemsControl x:Name="InputsList"
                  Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="2" Height="400">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
                <ItemsControl.ItemTemplate>
                    <DataTemplate>
                        <StackPanel HorizontalAlignment="Center" Background="Beige" Margin="10">
                            
                            <TextBlock Text="{Binding Name, StringFormat='Name: {0}'}"/>
                            <TextBlock Text="{Binding Id, StringFormat='Id: {0}'}"/>
                            <TextBlock Text="{Binding Type, StringFormat='Type: {0}'}"/>
                        <CheckBox Grid.Column="1" Content="Required" Margin="0,5,0,0"
                                  IsChecked="{Binding ElementName=Required, Path=CheckBoxIsChecked}"/>
                            <TextBox Grid.Column="0" Grid.Row="4"
                                   Text="{Binding Dpi, StringFormat='Dpi: {0}'}"/>
                            <TextBlock Grid.Column="0" Grid.Row="5"
                                   Text="Render:"/>
                            
                    </StackPanel>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>

我的視圖模型：

public class InputsListViewModel : Screen
{
    private IRootModel _rootModel;

    public InputsListViewModel(IRootModel rootModel)
    {
        _rootModel = rootModel;
    }

    private BindingList<InputModel> _inputs;

    public BindingList<InputModel> InputsList
    {
        get
        {
            _inputs = new (_rootModel.Inputs);
            return _inputs;
        }
        set
        {
            _inputs = value;
            NotifyOfPropertyChange(() => InputsList);
        }
    }

    private BindingList<RenderModel> _renders;

    public BindingList<RenderModel> RenderList
    {
        get 
        {
            _renders = new(_rootModel.Render);
            return _renders;
        }
        set 
        {
            _renders = value;
            NotifyOfPropertyChange(() => RenderList);
        }
    }

    private BindingList<LayoutModel> _layouts;

    public BindingList<LayoutModel> LayoutList
    {
        get
        {
            _layouts = new (_rootModel.Layout);
            return _layouts;
        }
        set
        {
            _layouts = value;
            NotifyOfPropertyChange(() => LayoutList);
        }
    }
}

我不需要在這里顯示所有屬性，只需要在給定時間顯示我需要的屬性。如果需要，我希望能夠添加任何缺少的屬性。

我是一個初學者，到目前為止我只知道如何手動創建我需要的欄位并系結到它們。

謝謝！

uj5u.com熱心網友回復：

您可以使用 ItemContainerStyle 或單個屬性隱藏整個專案，如 2 種不同方式所示

<ItemsControl ItemsSource="{Binding MyItems}">
    <ItemsControl.ItemContainerStyle>
        <Style>
            <Setter Property="Visibility" Value="{Binding ShowInUi, Converter={StaticResource BooleanToVisibilityConverter}}" />
        </Style>
    </ItemsControl.ItemContainerStyle>
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <TextBlock Text="{Binding Name, StringFormat='Name: {0}'}"/>
                <TextBlock Text="{Binding Id, StringFormat='Id: {0}'}"/>
                <TextBlock Text="{Binding Type, StringFormat='Type: {0}'}"/>
                    
                <!--possibility 1-->
                <TextBlock x:Name="AdditionalInfoText" Text="{Binding AdditionalInfo}"/>
                <!--possibility 2-->
                <TextBlock Text="{Binding SuperDuperValue}" Visibility="{Binding IsSuperDuperItem, Converter={StaticResource BooleanToVisibilityConverter}}"/>

            </StackPanel>
            <DataTemplate.Triggers>
                <DataTrigger Binding="{Binding AdditionalInfo}" Value="{x:Null}">
                    <Setter TargetName="AdditionalInfoText" Property="Visibility" Value="Collapsed"/>
                </DataTrigger>
            </DataTemplate.Triggers>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>

對于一個區域中的所有文本塊

<Style TargetType="TextBlock">
    <Style.Triggers>
        <Trigger Property="Text" Value="{x:Null}">
            <Setter Property="Visibility" Value="Collapsed"/>
        </Trigger>
        <DataTrigger Binding="{Binding Text.IsEmpty, RelativeSource={RelativeSource Self}}" Value="true">
            <Setter Property="Visibility" Value="Collapsed"/>
        </DataTrigger>
    </Style.Triggers>
</Style>

標籤：C＃ wpf 虚拟机 caliburn.micro

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