ContentPresenter中的BindableCollection

Question

我使用ContentPresenter (类似于MVC中的局部视图)来显示UserControl中的(子)视图的简单列表，但数据并未绑定。

尝试了数据绑定的详细版本，也尝试了一行，但没有数据绑定到显示。

UserControl有一个名为WorkPieces的属性，它是WorkPieceViewModel的BindableCollection，并在启动时实例化为具有默认值Width: 0、Length: 0和指示符(罗马数字)。UserControl视图的相关部分：

<ContentPresenter Grid.Row="7" Grid.Column="0" Grid.ColumnSpan="2" x:Name="WorkPieces" HorizontalAlignment="Stretch">
    <ContentPresenter.ContentTemplate>
        <DataTemplate DataType="{x:Type models:WorkPieceViewModel}">
            <local:WorkPieceView />
        </DataTemplate>
    </ContentPresenter.ContentTemplate>
</ContentPresenter>

The WorkPieceView：(也是UserControl)

<DockPanel HorizontalAlignment="Stretch">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="auto" />
        </Grid.ColumnDefinitions>

        <TextBlock Grid.Row="0" Grid.Column="0" x:Name="WorkPieceId" Visibility="Hidden" />

        <TextBlock Grid.Row="0" Grid.Column="1" x:Name="Designator" Text="{Binding Designator}" MinWidth="15"/>

        <TextBlock Grid.Row="0" Grid.Column="2" Text="{x:Static lang:Resources.Txt_W}" />

        <TextBox Grid.Row="0" Grid.Column="3" x:Name="WorkWidth" MinWidth="50"/>

        <TextBlock Grid.Row="0" Grid.Column="4" Text=" x " />

        <TextBlock Grid.Row="0" Grid.Column="5" Text="{x:Static lang:Resources.Txt_L}" />

        <TextBox Grid.Row="0" Grid.Column="6" x:Name="WorkLength" MinWidth="50"/>

        <Button Grid.Row="0" Grid.Column="7" Margin="5">
            <Image Source ="/Images/plus-sign.png" Height="16" Width="16" />
            <i:Interaction.Triggers>
                <i:EventTrigger EventName="Click">
                    <cal:ActionMessage MethodName="AddNewWorkPiece" />
                </i:EventTrigger>
            </i:Interaction.Triggers>
        </Button>

        <Button Grid.Row="0" Grid.Column="8" Margin="5">
            <Image Source ="/Images/minus-sign.png" Height="16" Width="16" />
            <i:Interaction.Triggers>
                <i:EventTrigger EventName="Click">
                    <cal:ActionMessage MethodName="RemoveWorkPiece">
                        <cal:Parameter Value="{Binding ElementName=Id}" />
                    </cal:ActionMessage>
                </i:EventTrigger>
            </i:Interaction.Triggers>
        </Button>
    </Grid>
</DockPanel>

主要问题是宽度和长度值没有绑定。我还有其他一些问题，比如strech不工作--但那只是UI，Designator没有显示，尽管它的值是'I‘(roman 1)。这可能是因为没有发生绑定。

Answer 1

问题是这项任务过于复杂。一个带有BindingList的简单ListBox解决了我的问题……