C# 嵌套数据的绑定

我有一节课

public class MyData
{
    public string Caption { get; set; }
    public List<Data1> ListData1 {get; set;}
}

public class Data1
{
    public string FirstName { get; set; }
    public List<Data2> ListData2 { get; set; }
}

public class Data2
{
    public string LastName { get; set; }
}

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

公共类MyData
{
公共字符串标题{get；set；}
公共列表ListData1{get；set；}
}
公共类数据1
{
公共字符串名{get；set；}
公共列表ListData2{get；set；}
}
公共类数据2
{
公共字符串LastName{get；set；}
}

数据必须以以下形式显示

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

我这样做-链接一个充满数据的MyData列表框。对于他来说，指向DataTemplate，带来代码

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

---

如何为lbData2进行绑定？ListData1.ListData2选项不起作用。

如果不想更改ViewModel中的任何内容，则只能在XAML上执行此操作：

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

<!--  Data1  -->
        <ListBox x:Name="firstNamelbx"
                 Grid.Column="1"
                 DisplayMemberPath = "FirstName"
                 ItemsSource="{Binding ListData1 }" />
        <!--  -->        

        <!--  Data2  -->
        <ListBox x:Name="lbData2" Grid.Column="2"
                 DataContext="{Binding Path=SelectedItem, ElementName=firstNamelbx}"
                 DisplayMemberPath = "LastName"
                 ItemsSource="{Binding ListData2}" />

---

我认为更好的方法是在视图模型中添加SelectedFirstName属性并将其与名字列表框的选定项绑定，或者使用ICollectionView而不是list并将其当前项与名字列表框同步。

我相信您可以使用以下绑定语法：

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

ItemsSource="{Binding ListData1/ListData2}" 

这意味着绑定到

ListData1

的当前或选定实例的

ListData2

属性

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>

---

您可以在MSDN页面上找到更多信息。

请查看此内容（及其答案）。我想这可能会对您有所帮助。您是否检查了HierarchicalDataTemplate:？谢谢，它可以工作，但我需要CurrentItem而不是SelectedItem。我回到了这个问题。绑定是工作（绑定ListData1/ListData2）。现在我需要在高度上对齐行。有什么想法吗？@FetFrumos，你能详细描述一下吗？您希望如何对齐两个列表？

            <!--  MyData  -->
            <Grid Grid.Column="0">

                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>

                <TextBlock Grid.Row="0" Text="{Binding Caption}" />

            </Grid>

            <!--  Data1  -->
            <ListBox 
                     Grid.Column="1"
                     DisplayMemberPath = "FirstName"
                     ItemsSource="{Binding ListData1 }" />
            <!--  -->        

            <!--  Data2  -->
            <ListBox x:Name="lbData2"
                     Grid.Column="2"
                     DisplayMemberPath = "LastName"
                     ItemsSource="{Binding ????}" />

        </Grid>
    </DataTemplate>