如何从ListView数据模板中获取对应行的CanvasView对象？

方法1：通过按钮的DataContext直接获取 #

由于DataTemplate内的控件默认继承当前行数据的DataContext，所以在按钮点击事件里可以直接提取对应行的CanvasView对象：

private void GoToView_Click(object sender, RoutedEventArgs e)
{
    Button btn = sender as Button;
    if (btn != null)
    {
        CanvasView currentView = btn.DataContext as CanvasView;
        if (currentView != null)
        {
            // 此处可使用currentView对象执行逻辑，比如导航、数据操作等
        }
    }
}

DeleteView_Click事件可复用完全相同的逻辑来获取对应行的CanvasView。

方法2：MVVM模式下使用命令绑定（推荐） #

如果项目遵循MVVM架构，建议通过命令绑定传递参数，实现视图与逻辑解耦：

1. 在ViewModel中定义命令 #

public ICommand GoToViewCommand { get; }
public ICommand DeleteViewCommand { get; }

public YourViewModel()
{
    // 假设使用RelayCommand实现ICommand（可自行实现或用框架提供的命令类）
    GoToViewCommand = new RelayCommand<CanvasView>(view =>
    {
        // 处理导航逻辑，view即为当前行的CanvasView对象
    });

    DeleteViewCommand = new RelayCommand<CanvasView>(view =>
    {
        // 处理删除逻辑
        CanvasViews.Remove(view);
    });
}

2. 修改XAML中的按钮绑定 #

<GridViewColumn Header="Go">
    <GridViewColumn.CellTemplate>
        <DataTemplate>
            <Button x:Name="GoToView" Style="{StaticResource TinyRoundedButton}" 
                    Command="{Binding DataContext.GoToViewCommand, RelativeSource={RelativeSource AncestorType=ListView}}"
                    CommandParameter="{Binding}" />
        </DataTemplate>
    </GridViewColumn.CellTemplate>
</GridViewColumn>

<GridViewColumn Header="Delete">
    <GridViewColumn.CellTemplate>
        <DataTemplate>
            <Button x:Name="DeleteView" Style="{StaticResource TinyRoundedButton}" Foreground="#BFE83131"
                    Command="{Binding DataContext.DeleteViewCommand, RelativeSource={RelativeSource AncestorType=ListView}}"
                    CommandParameter="{Binding}" />
        </DataTemplate>
    </GridViewColumn.CellTemplate>
</GridViewColumn>

CommandParameter="{Binding}"直接将当前行的CanvasView对象作为参数传递给命令，RelativeSource用于定位到ListView的DataContext（即ViewModel）。

内容的提问来源于stack exchange，提问作者user21293279