在 Xamarin Form 中单击一行上的 RadioButton 时获取 ListView 项目的索引

Question

我正在 ListView row 中实现 4 RadioButtons 并将它们与模型属性绑定。问题是当用户更改预先设置的属性并且 CheckedChanged event 触发时，我怎样才能知道用户更改了属性的 row(Index)?

这是我对 ListView 的实现。

<ListView x:Name ="personlist" ItemsSource="{Binding PersonList}" ItemSelected="personlist_ItemSelected" SelectionMode="Single">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <Grid RowDefinitions="*" ColumnDefinitions="3*,*,*,*,*" BackgroundColor="{Binding RowColor}">
                                <Label Text="{Binding Name}" Grid.Row="0" Grid.Column="0" VerticalTextAlignment="Center" FontSize="20" TextColor="Black"/>
                                <RadioButton Value="Travel" IsChecked="{Binding Travel, Mode=TwoWay}" Grid.Row="0" Grid.Column="1" CheckedChanged="RadioButton_CheckedChanged"/>
                                <RadioButton Value="Reading" IsChecked="{Binding Reading, Mode=TwoWay}" Grid.Row="0" Grid.Column="2" CheckedChanged="RadioButton_CheckedChanged"/>
                                <RadioButton Value="Sports" IsChecked="{Binding Sports, Mode=TwoWay}" Grid.Row="0" Grid.Column="3" CheckedChanged="RadioButton_CheckedChanged"/>
                                <RadioButton Value="Dance" IsChecked="{Binding Dance, Mode=TwoWay}" Grid.Row="0" Grid.Column="4" CheckedChanged="RadioButton_CheckedChanged"/>
                            </Grid>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
</ListView>

在.xaml.cs

private void RadioButton_CheckedChanged(object sender, CheckedChangedEventArgs e)
{
   // I want to get an index of the list item here.
}

有什么办法可以实现吗？这种方式或其他方式。

提前致谢！

Answer 1

使用BindingContext

private void RadioButton_CheckedChanged(object sender, CheckedChangedEventArgs e)
{
   var button = (RadioButton)sender;
   var item = (MyClassName)button.BindingContext;
}

item 将是绑定到 ListView

中该行的对象

在 Xamarin Form 中单击一行上的 RadioButton 时获取 ListView 项目的索引

Get index of ListView item when RadioButton on one row is clicked in Xamarin Form

c#

xaml

xamarin

xamarin.forms