C# 如何从ListPickerFlyout检索项目？

我创建了一个ListPickerLyout，我想通过一个按钮从列表中选择一个项目。 在XAML中，我这样做了：

<Button x:Name="BottoneFiltraCittaNotizie" Click="BottoneFiltraCittaNotizie_Click" Style="{StaticResource ButtonSearchStyle}" Grid.Row="0" BorderBrush="{x:Null}" Foreground="Gray" Margin="0,-12,0,0">
    <Button.Flyout>
       <ListPickerFlyout ItemsSource="{Binding Source={StaticResource Museum}}">
              <ListPickerFlyout.ItemTemplate>
                    <DataTemplate>
                          <StackPanel>
                              <TextBlock Text="{Binding NomeProvincia}" HorizontalAlignment="Left"/>
                          </StackPanel>
                    </DataTemplate>
              </ListPickerFlyout.ItemTemplate>
       </ListPickerFlyout>
    </Button.Flyout>
</Button>

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将对象的属性添加到视图模型中（或代码隐藏，或任何用作datacontex的对象），然后向该列表中的属性添加绑定

假设您在datacontext中有

public MyObject my_object{get；set；}

，您的xaml上应该有如下内容：

<ListPickerFlayout ...
                   SelectedItem = {binding my_object;} />

或者，正如本文所建议的，您不必绑定到属性（我会绑定，因为我将尝试以MVVM的方式进行绑定），您所要做的就是转换发送方并使用它的选定项，如下所示：

void PrintText(object sender, SelectionChangedEventArgs args)
{
    // get your object with the cast, and then get it's item
    ListBoxItem lbi = ((sender as ListBox).SelectedItem as ListBoxItem);
    // then you can use it like:
    tb.Text = "   You selected " + lbi.Content.ToString() + ".";
}

---

我试过了，但就像我在代码后面做的那样？没有属性“listpickerflyot.SelectedItem”，只有“listpickerflyot.SelectedItemProperty”我更新了答案。另外，请看一下我的文章，它可能会让您对所选项目以及您可以使用它做什么有更多的了解：）

public class SomeClass {
    // this is your code behind file
    public MyObject my_object {get;set;} 

    // this is where you go when you hit the button
    OnButtonClick(sender, event) {
        //my_object is accessible here. Assuming it has a DoSomething method, you can:
        my_object.DoSomething();
    }
}

void PrintText(object sender, SelectionChangedEventArgs args)
{
    // get your object with the cast, and then get it's item
    ListBoxItem lbi = ((sender as ListBox).SelectedItem as ListBoxItem);
    // then you can use it like:
    tb.Text = "   You selected " + lbi.Content.ToString() + ".";
}