C# 如何在winform中刷新wpf elementhost

当我的usercontrol（WindowsScreen）第一次加载时，我的elementhost显示正确。当我实例化usercontrol并传入不同的id时，elementhost不会得到更新。这是有原因的还是有办法解决的

这是我的密码

WindowsScreen.cs--winform：

public partial class WindowScreen : UserControl
{
    private WindowView _windowView;
    private WindowViewModel _windowViewModel = null;

    public WindowScreen(int id)
    {
        InitializeComponent();

        elementHost.Child = this.elementHost1;
        _windowViewModel = new WindowViewModel();
        _windowView = (WindowView) this.elementHost.Child;
        //_windowViewModel.LoadTypes(123); --- first load
                  _windowViewModel.LoadTypes(id); --- pass in parameter
        _windowView.DataContext = _windowViewModel;
    }
}

public partial class TestScreen : UserControl
{
    public TestScreen()
    {
        InitializeComponent();  
    }

    private void button1_Click(object sender, EventArgs e)
    {
        WindowScreen ws = new WindowScreen(298);
    }
}

TestScreen.cs--winform：

public partial class WindowScreen : UserControl
{
    private WindowView _windowView;
    private WindowViewModel _windowViewModel = null;

    public WindowScreen(int id)
    {
        InitializeComponent();

        elementHost.Child = this.elementHost1;
        _windowViewModel = new WindowViewModel();
        _windowView = (WindowView) this.elementHost.Child;
        //_windowViewModel.LoadTypes(123); --- first load
                  _windowViewModel.LoadTypes(id); --- pass in parameter
        _windowView.DataContext = _windowViewModel;
    }
}

public partial class TestScreen : UserControl
{
    public TestScreen()
    {
        InitializeComponent();  
    }

    private void button1_Click(object sender, EventArgs e)
    {
        WindowScreen ws = new WindowScreen(298);
    }
}

当你称之为：

WindowScreen ws = new WindowScreen(298);

您正在创建新的

窗口屏幕

，但从未将其设置为在

测试屏幕

控件中使用。您需要用此屏幕覆盖当前的

窗口屏幕

——类似于：

// This needs to be the appropriate/correct variable
this.windowScreen1 = new WindowScreen(298);

---

我已经试过你说的了。windowScreen=新windowScreen（298）；但是没有用。因此，当我单击TestUserControl中的按钮时，我将向WindowsScreen用户控件（它有一个elementhost）传递一个参数，这将更新WindowsScreen中的elementhost。我的elementhost（WindowView）仍然没有更新。还有其他建议吗？