c# - GridView 中的按钮 : How do I know which Item?

Question

我想在 GridView 的每一行中都有一个按钮来对该行执行操作。我能够获得点击，但是如何确定该按钮属于哪一行？

我目前的情况是这样的:

        <ListView ItemsSource="{Binding Calibrations}">
        <ListView.View>
            <GridView>
                <GridView.Columns>
                    <GridViewColumn Header="Voltage [kV]" Width="70" DisplayMemberBinding="{Binding Voltage}" />
                    <GridViewColumn Header="Filter" Width="100" DisplayMemberBinding="{Binding FilterName}" />
                    <GridViewColumn Header="Calibration Date" Width="100" DisplayMemberBinding="{Binding CalibrationDate}" />
                    <GridViewColumn Header="Calibration" Width="60">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <Button Content="Start" Click="OnStart" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView.Columns>
            </GridView>
        </ListView.View>
    </ListView>


        private void OnStart(object sender, RoutedEventArgs e)
    {
        // how do I know, on which item this button is
    }

是否有某种方法可以将此行上的项目绑定(bind)到 RoutedEventArgs？

Answer 1

点击的Button 的DataContext 将是您要查找的项目

假设您的源类是Calibration

private void OnStart(object sender, RoutedEventArgs e)
{
    Button button = sender as Button;
    Calibration clickedCalibration = button.DataContext as Calibration;
    // ...
}

另一种方法是使用 Command 而不是 Click 事件。这将允许您像这样绑定(bind) CommandParameter

<Button Command="{Binding MyCommand}"
        CommandParameter="{Binding}"/>

这样的例子在网上随处可见，这里有一个:Pass Command Parameter to RelayCommand