C# 使用Microsoft.VisualBasic.ApplicationServices管理应用程序'；这是一个实例

我已设法从StackOverflow中找到以下代码：

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();
        }

    }

}

我的

程序中有这个。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
    }

现在，在运行（）之前，我需要很多应用程序逻辑：

---

如何设置此逻辑？我使用一个命令行参数来实际启动另一个表单。我正在使用命令行参数进行卸载，并调用一些方法来设置数据库和日志记录。同样，我也在建立文化和主题。所有这些都是在实际应用程序运行之前完成的。有人建议吗？

如果简化链接的Visual Basic派生类，只需替换当前对Application.Run（）的调用即可。这确实取决于您希望如何处理后续实例

在下面的版本中，只需将调用：Application.Run（myForm）更改为SingleInstanceApplication.Run（myForm）

然后Main（）方法包含“应用程序逻辑”

---

好的，但是我应该把我的应用程序逻辑代码（我问题中的第三段代码）放在哪里呢？你所说的应用程序逻辑代码看起来像你原来的Main（）函数。保持这样。只需去掉您添加的单实例逻辑。错误。。。实际上，我是根据命令行参数使用不同的主窗体启动的。您是否建议主函数不会在secon实例上重新执行？我调用的

Application Logic

代码块包含两行：

Application.Run（new-appmdiribondx（））和
应用程序.Run（新建AppMDIRibbon（））
我不希望我的
应用程序逻辑
代码出现在
SingleInstanceApplication
（
SingleInstanceController
在我原来的例子中）类中。好的，再试一次。也许我误解了，但我不这么认为。我更新了这篇文章，把你的整个“应用程序逻辑”放在一个主方法中。更换应用程序。按我所说的运行。
        #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

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;
    }
}

   [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
    }