单实例在 C# 中不起作用，程序无法访问自身

Question

我正在尝试让程序在当前实例而不是新实例中打开文件，这是到目前为止我所拥有的，这是我从 这个问题。

static class Program
    {
        static EsfEditorSingleton controller;
        [STAThread]
        public static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            // Show the main form of the app.
            controller = new EsfEditorSingleton();
            string[] args = Environment.GetCommandLineArgs();
            controller.Run(args);
            controller.StartupNextInstance += controller.NextInstanceStartup;
        }

    }
    public class EsfEditorSingleton : WindowsFormsApplicationBase
    {
        internal EsfEditorSingleton() : base()
        {
            this.IsSingleInstance = true;
            this.MainForm = new EsfEditorForm();
        }
        public void NextInstanceStartup(object sender, StartupNextInstanceEventArgs e)
        {
            EsfEditorForm form = (EsfEditorForm)this.MainForm;
            string[] args = null;
            e.CommandLine.CopyTo(args, 0);
            form.mProcessArgs(args);
        }
    }

更新：这是上面调用的部分。

public class EsfEditorForm : Form
{

    public EsfEditorForm()
    {
        this.InitializeComponent();
    }

    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);
        string[] args = Environment.GetCommandLineArgs();
        mProcessArgs(args);
    }

    public void mProcessArgs(string[] args)
    {
        if (args.Length > 0)
        {
            for (int i = 0; i < args.Length; i++)
            {
                if (System.IO.File.Exists(args[i])) { this.OpenFile(args[i]); }
            }
        }
    }
}

当我在 VS 2010 Pro 中按 F5（仅供参考）时，它会编译并启动，然后在 Visual Studio 中给出此 IOException 未处理错误：

该进程无法访问文件 'I:\Program Files\Totar\EFS Editor\VS - Solution\bin\x86\Release\EsfEditor 1.4.8.exe'，因为它正被另一个进程使用。

我相信提到的文件是当前正在运行的可执行文件。

堆栈跟踪：

at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at System.IO.File.Open(String path, FileMode mode, FileAccess access, FileShare share)
at EsfEditor.Parser.EsfParser..ctor(String filename)
at EsfEditor.Core.EsfObjects.EsfFile..ctor(String filePath)
at EsfEditor.Forms.EsfEditorForm.OpenFile(String filePath)
at EsfEditor.Forms.EsfEditorForm.mProcessArgs(String[] args)
at EsfEditor.Forms.EsfEditorForm.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.set_Visible(Boolean value)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at EsfEditor.Program.Main()

Answer 1

你不应该跳过 mProcessArgs 中的第一个参数吗？

public void mProcessArgs(string[] args)
    {
        if (args.Length > 0)
        {
            for (int i = **1**; i < args.Length; i++)
            {
                if (System.IO.File.Exists(args[i])) { this.OpenFile(args[i]); }
            }
        }
    }

Answer 2

Environment.GetCommandLineArgs() 中的第一个参数是正在运行的可执行文件。您需要修改 Main 方法以将Environment.GetCommandLineArgs().Skip(1) 传递给您的controller.Run() 方法