Wpf ObservableCollection添加/删除操作不支持'；t更新xaml端的ItemsControl

假设我有一个数据类：

class MyData
{
    public string FirstName {get;set;}
    public string LastName {get;set;}
}

然后在我的视图模型中

class MyViewModel : ModelBase // assume this has all the work behind for prop notification changes
{
    private ObservableCollection<MyData> addedData = new ObservableCollection<MyData>();

    public ObservableCollection<MyData> AddedData
    {
        get
        {
            return this.addedData;
        }

        set
        {
            this.addedData = value;
            this.RaisePropertyChangedEvent();
        }
    }

    public void AddDataRequestHandler()
    {
        this.AddedData.Add(new MyData() {some firstname and lastname}); //prototyping
    }
}

classmyviewmodel:ModelBase//假设这已经完成了所有关于道具通知更改的工作
{
私有ObservableCollection AddData=新ObservableCollection（）；
公共可观测收集数据
{
收到
{
返回此.addedata；
}
设置
{
此。addedData=值；
this.RaisePropertyChangedEvent（）；
}
}
public void AddDataRequestHandler（）
{
this.addedata.Add（new MyData（）{some firstname and lastname}）；//原型
}
}

在xaml方面，我有类似的东西

<Grid
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>

    <Button Grid.Row="0" Content="Add" Command="{Binding Path=AddDataCommand}" />

    <ItemsControl Grid.Row="1" ItemsSource="{Binding Path=AddedData}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <ItemsControl ItemsSource="{Binding}">
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="{Binding Path=FirstName}" />
                                <TextBlock Text=" - " />
                                <TextBlock Text="{Binding Path=LastName}" />
                            </StackPanel>
                        </DataTemplate>
                    </ItemsControl.ItemTemplate>
                </ItemsControl>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>
</Grid>

---

我的缺点是，我没有注意到我在xaml方面有过多的嵌套。因此ItemsControl应该简单得多，如下所示，并且在以下情况下可以正常工作：

<Grid
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>

    <Button Grid.Row="0" Content="Add" Command="{Binding Path=AddDataCommand}" />

    <ItemsControl Grid.Row="1" ItemsSource="{Binding Path=AddedData}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding Path=FirstName}" />
                    <TextBlock Text=" - " />
                    <TextBlock Text="{Binding Path=LastName}" />
                </StackPanel>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>
</Grid>

尝试从ctor初始化集合，并为集合属性引发已更改的属性。如果这是有意义的，因为您从未通知AddedData属性已更改。