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如何在元素宿主中使用prisim

cag cal prism wpf

1

Mark Lindell · 技术社区 · 15 年前

我是Prism的新手,我正试图在元素宿主中宿主Prism控件。我好像错过了一些非常基本的东西。我有一个包含ElementHost的WinForm。以下代码的格式为:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        Bootstrapper bootstrapper = new Bootstrapper();
        bootstrapper.Run();

        var child = bootstrapper.Container.Resolve<Shell>();
        elementHost.Child = child;

    }

引导程序处理注册

public class Bootstrapper : UnityBootstrapper
{
    protected override DependencyObject CreateShell()
    {
        Container.RegisterType<MyView>();
        var shell = Container.Resolve<Shell>();
        return shell;
    }

    protected override IModuleCatalog GetModuleCatalog()
    {
        ModuleCatalog catalog = new ModuleCatalog();
        catalog.AddModule(typeof(MyModule));
        return catalog;
    }
}

此时myview.xaml只是一个标签。

shell.xaml是包含以下xaml的用户控件:

<ItemsControl Name="MainRegion" cal:RegionManager.RegionName="MainRegion" />

模块代码最少:

public class MyModule : IModule
{
    private readonly IRegionViewRegistry _regionViewRegistry;

    public MyModule(IRegionViewRegistry registry)
    {
        _regionViewRegistry = registry;   
    }

    public void Initialize()
    {
        _regionViewRegistry.RegisterViewWithRegion("MainRegion", typeof(MyView));
    }
}

我一直在深入追踪Prism代码,试图找出为什么视图从未设置到该区域。我错过了一些基本的东西吗?

2 回复 | 直到 10 年前

1

4

Mark Lindell 13 年前

原因是Prism中的代码:

private static bool RegionManager::IsInDesignMode(DependencyObject element)
{
    // Due to a known issue in Cider, GetIsInDesignMode attached property value is not enough to know if it's in design mode.
    return DesignerProperties.GetIsInDesignMode(element) || Application.Current == null
        || Application.Current.GetType() == typeof(Application);
}

原因是对于非WPF应用程序,应用程序。当前为空!

解决方案:

创建将从System.Windows.Application继承的空类。(名字不重要):

在插入插件时,执行以下代码:

public class MyApp : System.Windows.Application
{
}

if (System.Windows.Application.Current == null)
{
    // create the Application object
    new MyApp();
}

现在您有了一个应用程序。current不为空,它不等于typeof(application)。

2

0

user2330678 10 年前

@上面的马克·林德尔为我工作。我唯一需要改变的是下面。

我的引导程序

 public  class Bootstrapper : UnityBootstrapper
    {
        protected override DependencyObject CreateShell()
        {
            return this.Container.Resolve<Shell>();
        }

        protected override void InitializeShell()
        {
            base.InitializeShell();    
            if (System.Windows.Application.Current == null)
            {
                // create the Application object
                new HelloWorld.Myapp();
            }

            //App.Current.MainWindow = (Window)this.Shell;
            //App.Current.MainWindow.Show();
            //MainWindow = (Window)this.Shell;

        }     

        protected override void ConfigureModuleCatalog()
        {
            base.ConfigureModuleCatalog();

            ModuleCatalog moduleCatalog = (ModuleCatalog)this.ModuleCatalog;
            moduleCatalog.AddModule(typeof(HelloWorldModule.HelloWorldModule));
        }

还有我的形体课

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //Create the ElementHost control for hosting the WPF UserControl
            ElementHost host = new ElementHost();
            host.Dock = DockStyle.Fill;

            Bootstrapper bootstrapper = new Bootstrapper();
            bootstrapper.Run(true);

            //var uc = bootstrapper.Container.Resolve<Shell>(); This line threw error

            //Create the WPF UserControl.          

                            HelloWorld.Shell uc = new HelloWorld.Shell();

            //Assign the WPF UserControl to the ElementHost control's Child property.
            host.Child = uc;

            //Add the ElementHost control to the form's collection of child controls.
            this.Controls.Add(host);
        }
    }   


        }

为了清楚起见,我在包含shell的WPF Prism应用程序中添加了下面的类。

public class MyApp : System.Windows.Application
{
}

编辑:请注意,加载方法处理程序(表单的)必须由右键单击窗体,在属性窗口中,转到事件并双击 CLICL负载。复制和粘贴加载事件处理程序不起作用。