Wsrtjtyk

I have a .NET application (.NET Framework 4) which monitors certain machines. I am capturing the console close event (actually CTRL+C) and ask the user if he/she is sure about it. In case the answer is yes, the application proceeds to run a method that closes open resources.
When running it in the Debug build it works fine, the problem is running it in Release mode, when CTRL+C is pressed, the application crashes and this event is shown in Window's Event Viewer.

 <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

 <System>

  <Provider Name=".NET Runtime" /> 

  <EventID Qualifiers="0">1026</EventID> 

  <Level>2</Level> 

  <Task>0</Task> 

  <Keywords>0x80000000000000</Keywords> 

  <TimeCreated SystemTime="2018-11-08T13:39:31.140511100Z" /> 

  <EventRecordID>25125</EventRecordID> 

  <Channel>Application</Channel> 

  <Computer>this.computer</Computer> 

  <Security /> 

  </System>

 <EventData>

  <Data>Aplicación: FooBar.exe Versión de Framework: v4.0.30319 Descripción: el proceso terminó debido a una excepción no controlada. Información de la excepción: código de la excepción c0000005, dirección de la excepción 0000000000E80B18</Data> 

  </EventData>

  </Event>

Below I add the code I use to invoke the method that cleans resources.

enum CtrlType

{

    CTRL_C_EVENT = 0,

    CTRL_BREAK_EVENT = 1,

    CTRL_CLOSE_EVENT = 2,

    CTRL_LOGOFF_EVENT = 5,

    CTRL_SHUTDOWN_EVENT = 6

}



private delegate bool EventHandler(CtrlType sig);



[DllImport("Kernel32")]

private static extern bool SetConsoleCtrlHandler(EventHandler handler, bool add);

private static bool Handler(CtrlType sig)

{

    if (sig == CtrlType.CTRL_C_EVENT)

    {

        DialogResult dr = MessageBox.Show("Seguro que quieres cerrar la aplicación?", "Confirmación de cierre", MessageBoxButtons.YesNo);

        switch (dr)

        {

            case DialogResult.Yes:

                Environment.Exit(0); // se ejecutará la limpieza y luego se cerrará la aplicacion

                return false;

            case DialogResult.No:

                return true;

            default:

                break;

        }

    } else

    {

        DialogResult exitDialog = MessageBox.Show("La aplicación procederá a cerrarse", "Cerrando Supervisor", MessageBoxButtons.OK);

    }

    return true;

}

[DllImport("user32.dll")]

public static extern int DeleteMenu(IntPtr hMenu, int nPosition, int wFlags);



[DllImport("user32.dll")]

private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);



[DllImport("kernel32.dll", ExactSpelling = true)]

private static extern IntPtr GetConsoleWindow();

[DllImport("user32.dll")]

static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

#endregion



#region Methods

public static void Main(string args)

{

    SetConsoleCtrlHandler(Handler, true);

    Console.Title = GlobalConfig.Title;

    Console.Clear();

    DeleteMenu(GetSystemMenu(GetConsoleWindow(), false), 0xF060, 0x00000000);

    ShowWindow(GetConsoleWindow(), 5);



    //AppDomain.CurrentDomain.ProcessExit += new System.EventHandler(CleanBeforeExit);



    init();

}



static void CleanBeforeExit(object sender, EventArgs e) { ... }

If I use the ProcessExit way it won't crash, but it won't execute my CleanBeforeExit method either.

Does anybody know how to solve this? I don't think the client (a really important one) would accept an application in Build config (or isn't it really important?).

I ended up solving it by using an EventHandler variable

static EventHandler _handler;

and

_handler += new EventHandler(Handler);

SetConsoleCtrlHandler(_handler, true);

instead of

SetConsoleCtrlHandler(Handler, true);