revit API (visual studio c#)有没有一个函数可以告诉我用户点击了哪个按钮？

// 创建一个自定义的Revit外部事件
public class MyExternalEvent : IExternalEventHandler
{
    public void Execute(UIApplication app)
    {
        // 在这里根据按钮标识符执行相应的操作
        // 您可以使用if语句或switch语句来区分不同的按钮
        // 例如：
        if (buttonIdentifier == "Button1")
        {
            // 执行按钮1的操作
        }
        else if (buttonIdentifier == "Button2")
        {
            // 执行按钮2的操作
        }
        // ...
    }

    public string GetName()
    {
        return "MyExternalEvent";
    }
}

// 在Revit中创建一个自定义的Ribbon面板，并添加按钮
public void CreateRibbonPanel()
{
    // 获取Ribbon控件
    RibbonPanel ribbonPanel = application.CreateRibbonPanel(tabName, panelName);

    // 创建按钮
    PushButton button1 = ribbonPanel.AddItem(new PushButtonData("Button1", "按钮1", assemblyPath, className)) as PushButton;
    PushButton button2 = ribbonPanel.AddItem(new PushButtonData("Button2", "按钮2", assemblyPath, className)) as PushButton;

    // 设置按钮的点击事件处理程序
    button1.LargeImage = new BitmapImage(new Uri(imagePath1));
    button1.ToolTip = "按钮1";
    button1.LongDescription = "点击按钮1执行相应操作";
    button1.AvailabilityClassName = className;

    button2.LargeImage = new BitmapImage(new Uri(imagePath2));
    button2.ToolTip = "按钮2";
    button2.LongDescription = "点击按钮2执行相应操作";
    button2.AvailabilityClassName = className;
}

// 按钮的点击事件处理程序
public void OnButtonClick(object sender, RoutedEventArgs e)
{
    // 触发外部事件
    ExternalEvent.Raise(new MyExternalEvent(buttonIdentifier));
}