RowDoubleClick

这是一个常见的请求，能够处理双击 RadGridView 中的行。Telerik 提出的解决方案（ http://demos.telerik.com/silverlight/#GridView/ClickEvents ）基于以下代码：

 this.grid.AddHandler(GridViewCellBase.CellDoubleClickEvent, new EventHandler<RadRoutedEventArgs>(OnCellDoubleClick), true);

如果你正在使用 MVVM，你可能更喜欢附加一个 ICommand，它将作为参数传递给已被点击的行的 DataContext。这是如何做到这一点。XAML：

    <telerik:RadGridView
        ItemsSource="{Binding Rows}"
        IsReadOnly="True"
        ShowGroupPanel="False"
        ShowColumnFooters="True"
        local:RadGridViewAttachedProperties.RowDoubleClickCommand="{Binding DoubleClickRow}"/>

AttachedProperty：

public static class RadGridViewAttachedProperties
{
    public static readonly DependencyProperty RowDoubleClickCommandProperty =
        DependencyProperty.RegisterAttached("RowDoubleClickCommand", typeof(ICommand), typeof(RadGridViewAttachedProperties), new UIPropertyMetadata(null, OnRowDoubleClickCommandChanged));

    public static ICommand GetRowDoubleClickCommand(DependencyObject obj)
    {
        return (ICommand)obj.GetValue(RowDoubleClickCommandProperty);
    }

    public static void SetRowDoubleClickCommand(DependencyObject obj, ICommand value)
    {
        obj.SetValue(RowDoubleClickCommandProperty, value);
    }

    private static void OnMouseDoubleClick(object sender, RoutedEventArgs e)
    {
        var obj = sender as DependencyObject;
        if (obj != null)
        {
            var command = GetRowDoubleClickCommand(obj);
            if (command != null)
            {
                var frameworkElement = e.OriginalSource as FrameworkElement;
                var dataContext = frameworkElement?.DataContext;
                if (command.CanExecute(dataContext))
                {
                    command.Execute(dataContext);
                }
            }
        }
    }

    private static void OnRowDoubleClickCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var controlIsTheRightType = d as RadGridView;
        if (controlIsTheRightType == null)
        {
            return;
        }

        controlIsTheRightType.MouseDoubleClick += OnMouseDoubleClick;
    }
}

示例 ViewModel（使用 Telerik DelegateCommand 作为命令;但你可以执行你喜欢的操作）：

public class MainWindowViewModel
{
    public MainWindowViewModel()
    {
        Rows = new ObservableCollection<string>();
        Rows.Add("kljshndfoa");
        DoubleClickRow = new DelegateCommand(e => MessageBox.Show("Hello " + e));
    }

    public ICommand DoubleClickRow { get; }
    
    public ObservableCollection<string> Rows { get; }
}

注意：你将知道 RadGridView 的 ItemsSource 中的内容类型。在 ICommand 的 Execute 方法中，请确保检查命令的参数类型，因为单击页眉或页脚也会触发此命令; 但在这些情况下，参数将不是你的项目之一。