什么是 Windows 窗体应用程序中的“System.Windows.Navigation”程序集

Question

我正在尝试添加这些代码：

public partial class My_SyS : Form
{
    List<Uri> HistoryStack;
    int HistoryStack_Index;
    bool fromHistory;

    public Sisi_Start()
    {
        InitializeComponent();

        HistoryStack = new List<Uri>();
        HistoryStack_Index = 0;
        fromHistory = false;
        webBrowser_main.Navigated += new EventHandler<System.Windows.Navigation.NavigationEventArgs>(webBrowser_main_Navigated);
        updateNavButtons();
    }

    ....

这里是webBrowser_main_Navigated 事件：

private void webBrowser_main_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
}

我收到以下错误：

The type or namespace name 'Navigation' does not exist in the namespace 'System.Windows' (are you missing an assembly reference?)

我应该使用哪个程序集作为参考？

Answer 1

在PresentationFramework（在PresentationFramework.dll中）Assembly中添加对System.Windows.Navigation的引用