En utilisant Microsoft.VisualBasic.ApplicationServices pour gérer seule instance d'une application

Question

J'ai réussi à trouver le code suivant de StackOverflow:

using Microsoft.VisualBasic.ApplicationServices;
using System.Windows.Forms;

namespace ExciteEngine2.MainApplication {

    public class SingleInstanceController: WindowsFormsApplicationBase {

        public delegate Form CreateMainForm();
        public delegate void StartNextInstanceDelegate(Form mainWindow);
        private readonly CreateMainForm formCreation;
        private readonly StartNextInstanceDelegate onStartNextInstance;

        public SingleInstanceController() {

        }
        public SingleInstanceController(AuthenticationMode authenticationMode)
            : base(authenticationMode) {

        }

        public SingleInstanceController(CreateMainForm formCreation, StartNextInstanceDelegate onStartNextInstance) {
            // Set whether the application is single instance
            this.formCreation = formCreation;
            this.onStartNextInstance = onStartNextInstance;
            IsSingleInstance = true;

            StartupNextInstance += this_StartupNextInstance;
        }

        private void this_StartupNextInstance(object sender, StartupNextInstanceEventArgs e) {
            if (onStartNextInstance != null) {
                onStartNextInstance(MainForm); 
                // This code will be executed when the user tries to start the running program again,
                // for example, by clicking on the exe file.
                // This code can determine how to re-activate the existing main window of the running application.
            }
        }

        protected override void OnCreateMainForm() {
            // Instantiate your main application form
            MainForm = formCreation();
        }

        //public void Run() {
        //  string[] commandLine = new string[0];
        //  base.Run(commandLine);
        //}

        protected override void OnRun() {
            base.OnRun();
        }

    }

}

Et j'ai dans mon Program.cs:

    private static Form CreateForm() {
        return new AppMDIRibbon();
    }

    private static void OnStartNextInstance(Form mainWindow)            
    {
        // When the user tries to restart the application again, the main window is activated again.
        mainWindow.WindowState = FormWindowState.Maximized;
    }

    [STAThread]
    static void Main(string[] args) {

        SingleInstanceController ApplicationSingleInstanceController = new SingleInstanceController(CreateForm, OnStartNextInstance);           
        ApplicationSingleInstanceController.Run(args);   

        #region Application Logic
        #endregion
    }

Maintenant, j'ai beaucoup de logique d'application que j'ai besoin avant la course ():

        #region Application Logic
        //Uninstall
        foreach (string arg in args) {
            if (arg.Split('=')[0] == "/u") {
                ApplicationLogger.Info("Uninstallation command received.");
                Process.Start(new ProcessStartInfo(Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\msiexec.exe", "/x " + arg.Split('=')[1]));
                return;
            }
        }

        SetupXPO();
        SetupLogging();

        Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
        Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-GB");

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        Application.ThreadException += Application_ThreadException;

        try {
            ApplicationLogger.Info("Setting Telerik Theme: " + ConfigurationManager.AppSettings["ThemeToUse"]);
            ThemeResolutionService.ApplicationThemeName = ConfigurationManager.AppSettings["ThemeToUse"];

        }
        catch (Exception ex) {
            ApplicationLogger.Error("Exception while setting Telerik Theme.", ex);
            ThemeResolutionService.ApplicationThemeName = "ControlDefault";

        }

        DevExpress.UserSkins.OfficeSkins.Register();
        DevExpress.UserSkins.BonusSkins.Register();
        DevExpress.Skins.SkinManager.EnableFormSkins();
        DevExpress.Skins.SkinManager.EnableMdiFormSkins();

        if (args.Contains("/dx")) {
            Application.Run(new AppMDIRibbonDX());
            ApplicationLogger.Info("Application (DX) started.");

        }
        else {
            Application.Run(new AppMDIRibbon());
            ApplicationLogger.Info("Application started.");

        }
        #endregion

Comment configurer je cette logique? J'utilise un argument de ligne de commande pour démarrer effectivement une autre forme. J'utilise un argument de ligne de commande pour provoquer une désinstallation et d'appeler également une méthode pour la configuration DB et l'exploitation forestière. De même, je suis la mise en place de la culture et des thèmes aussi. Tout cela avant la course d'application réelle. Quelqu'un peut-il proposer?

Answer 1

Si vous simplifiez la classe Visual Basic dérivée vous LIÉ, vous pouvez simplement remplacer l'appel en cours à Application.Run (). Cela ne dépend de la façon dont vous voulez gérer les instances suivantes.

Avec la version ci-dessous, il suffit de changer de vous appelle: Application.Run (myForm) à SingleInstanceApplication.Run (myForm);

public sealed class SingleInstanceApplication : WindowsFormsApplicationBase
{
    private static SingleInstanceApplication _application;

    private SingleInstanceApplication()
    {
        base.IsSingleInstance = true;
    }

    public static void Run(Form form)
    {
        _application = new SingleInstanceApplication {MainForm = form};

        _application.StartupNextInstance += NextInstanceHandler;
        _application.Run(Environment.GetCommandLineArgs());
    }

    static void NextInstanceHandler(object sender, StartupNextInstanceEventArgs e)
    {
        // Do whatever you want to do when the user launches subsequent instances
        // like when the user tries to restart the application again, the main window is activated again.
        _application.MainWindow.WindowState = FormWindowState.Maximized;
    }
}

Ensuite, votre méthode contient votre "logique Application" Main ()

   [STAThread]
    static void Main(string[] args) {

        #region Application Logic
        //Uninstall
        foreach (string arg in args) {
            if (arg.Split('=')[0] == "/u") {
                ApplicationLogger.Info("Uninstallation command received.");
                Process.Start(new ProcessStartInfo(Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\msiexec.exe", "/x " + arg.Split('=')[1]));
                return;
            }
        }

        SetupXPO();
        SetupLogging();

        Thread.CurrentThread.CurrentCulture = new CultureInfo("en-GB");
        Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-GB");

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        Application.ThreadException += Application_ThreadException;

        try {
            ApplicationLogger.Info("Setting Telerik Theme: " + ConfigurationManager.AppSettings["ThemeToUse"]);
            ThemeResolutionService.ApplicationThemeName = ConfigurationManager.AppSettings["ThemeToUse"];

        }
        catch (Exception ex) {
            ApplicationLogger.Error("Exception while setting Telerik Theme.", ex);
            ThemeResolutionService.ApplicationThemeName = "ControlDefault";

        }

        DevExpress.UserSkins.OfficeSkins.Register();
        DevExpress.UserSkins.BonusSkins.Register();
        DevExpress.Skins.SkinManager.EnableFormSkins();
        DevExpress.Skins.SkinManager.EnableMdiFormSkins();

        if (args.Contains("/dx")) {
            SingleInstanceApplication.Run(new AppMDIRibbonDX());
            ApplicationLogger.Info("Application (DX) started.");

        }
        else {
            SingleInstanceApplication.Run(new AppMDIRibbon());
            ApplicationLogger.Info("Application started.");

        }
        #endregion
    }