WPF 用Main函数方式启动程序

原文:WPF 用Main函数方式启动程序

WPF默认程序启动：新建project后自动生成的App.xaml中指定程序启动方式（StartupUri="MainWindow.xaml"），如下代码所示，启动MainWindow页面

<Application x:Class="MyFirstWPFApplication.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:MyFirstWPFApplication"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
         
    </Application.Resources>
</Application>

WPF用Main函数方式启动程序：自己写Main函数作为启动点

1.在WPF自动生成的App.cs文件中写Main函数

public partial class App : Application
    {
        [STAThread]
        static void Main()
        {
　　　　　　　// 方式1
            Application app = new Application();
            MyWindow win = new MyWindow();
            app.Run(win);

            // 方式2
            MyWindow win = new MyWindow ();
            app.MainWindow = win;
            win.Show();
            app.Run();  

            // 方式3
            app.StartupUri = new Uri("MyWindow.xaml", UriKind.Relative);
            app.Run();
        }
    }

2.自己创建一个类，写Main函数

public static class StartUpClass
    {

　　　// [STAThread] attribute指示应用程序的 COM线程模型是单线程单元
        [STAThread]
        public static void Main(string[] args)
        {
            SingleInstanceStart SingleInstanceStart = new SingleInstanceStart();
            SingleInstanceStart.Run(args);
        }
    }

WindowsFormsApplicationBase需要引用Microsoft.VisualBasic.dll

public class SingleInstanceStart : WindowsFormsApplicationBase
    {
        protected override bool OnStartup(StartupEventArgs e)
        {
            // DoSomething
            return true;
        }
    }

最后 需要更改App.xaml文件属性

生成操作从ApplicationDefinition改为Page。

3.

代码启动

 

Application x:Class="超级.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:超级"
              Startup="App_OnStartup">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml"/>
                <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

　

 public partial class App : Application
    {

        private  void App_OnStartup(object sender, StartupEventArgs e)
        {
            //NavigationWindow window = new NavigationWindow();
            //window.Source = new Uri("MainWindow.xaml", UriKind.Relative);
            //window.Height = 800;
            //window.Width = 800;
            //window.WindowStartupLocation = WindowStartupLocation.CenterScreen;
            //window.Show();

            Application app = new Application();
            MainWindow mv = new MainWindow();
            app.Run(mv);

            Application app1 = new Application();

            app1.StartupUri = new Uri("MainWindow.xaml");
            app1.Run();

        }
}