public async void Execute(object parameter)
 {
     var result = Task.FromResult(default(IUICommand));
     owner.DownloadVisible = false;
     owner.ProgressVisible = true;
     var folder = await downloader.VerifyFolderCreation();
     using (var client = new System.Net.Http.HttpClient())
     {
         // find all selected episodes.
         List<Task> results = new List<Task>();
         foreach (var episode in owner.selectedEpisodes)
         {
             var path = episode.Description;
             var writeTask = downloader.SaveUrlAsync(folder, client, path);
             results.Add(writeTask);
         }
         var allTasks = Task.WhenAll(results.ToArray());
         owner.ActiveDownload = allTasks;
         try
         {
             await allTasks;
         }
         catch (Exception)
         {
             // Umm, some download failed.
             var errMsg = new MessageDialog("One or more downloads failed");
             result = errMsg.ShowAsync().AsTask();
         }
         await result;
     }
     owner.DownloadVisible = true;
     owner.ProgressVisible = false;
     owner.selectedEpisodes.Clear();
 }

    protected void OnButton1Clicked(object sender, EventArgs e)
    {
        int aciertos = 0;

        if (this.radb1.Active) {
            aciertos += 1;
        }

        if (this.chPortu.Active) {
            aciertos += 1;
        }

        if (this.chReino.Active) {
            aciertos += 1;
        }

        if (this.chMace.Active) {
            aciertos += 1;
        }

        if (this.spinb1.Text == "31") {
            aciertos += 1;
        }

        if (this.calendar1.GetDate ().ToShortDateString () == "07/05/1945") {
            aciertos +=1;
        }

        MessageDialog ve=new MessageDialog(this, DialogFlags.Modal, MessageType.Info, ButtonsType.Ok, "Código: " + this.entry1.Text
                                           + "\nNombre: " + this.entry2.Text + "\n" + Convert.ToString(aciertos) + " aciertos.");
        ve.Run();
        ve.Destroy();
        aciertos=0;
    }

 public void TestInitialize()
 {
     var fixture = new Fixture();
     factories = Substitute.For<Factories>();
     navigator = Substitute.For<Navigator>();
     stateProvider = Substitute.For<StateProvider>();
     facade = Substitute.For<ReplacementBuilderAndSugarEstimatorFacade>();
     clipboard = Substitute.For<Clipboard>();
     messageDialog = Substitute.For<MessageDialog>();
     navigation = new InsulinEditingViewModel.Navigation();
     CreateSut();
     insulin = fixture.Create<Insulin>();
     insulin.InitializeCircumstances(new List<Guid>());
     insulin.SetOwner(factories);
     sugar = new Sugar();
     sugar.SetOwner(factories);
     factories.InsulinCircumstances.Returns(fixture.CreateMany<InsulinCircumstance>().ToList());
     factories.CreateSugar().Returns(sugar);
     settings = new Settings { MaxBolus = 5 };
     factories.Settings.Returns(settings);
     meal = fixture.Create<Meal>();
     factories.Finder.FindMealByInsulin(insulin).Returns(meal);
     factories.Finder.FindInsulinById(insulin.Id).Returns(insulin);
     var replacementAndEstimatedSugars = new ReplacementAndEstimatedSugars();
     replacementAndEstimatedSugars.EstimatedSugars = new List<Sugar>();
     replacementAndEstimatedSugars.Replacement
         = new Replacement { InsulinTotal = new Insulin(), Items = new List<ReplacementItem>() };
     facade.GetReplacementAndEstimatedSugars(Arg.Any<Meal>(), Arg.Any<Insulin>(), Arg.Any<Sugar>())
             .Returns(replacementAndEstimatedSugars);
     factories.MealNames.Returns(new List<MealName>());
     stateProvider.State.Returns(new Dictionary<string, object>());
 }

    protected void OnButton1Clicked(object sender, EventArgs e)
    {
        int puntos =0;

        if(this.opca.Active)
            puntos++;

        if(this.spm.Text == "4")

        if(this.opa.Active)
            puntos++;
        if(this.opd.Active)
            puntos++;

        DateTime fecha = this.calendario.GetDate();
        string fechaseleccionada = fecha.ToShortDateString();
        if(fechaseleccionada == "16/09/1810"){
            puntos++;
        }
        string a,b;

        a= nombre.Text;
        b= codigo.Text;

        MessageDialog md = new MessageDialog (null,
                                              DialogFlags.Modal,
                                              MessageType.Info,
                                              ButtonsType.None,"Nombre : "+ a +"\n"+ "Codigo: "+b + "\n" +
                                              "Grupo: " +
                                              "Ha obtenido: " + puntos + " aciertos");
        md.Show();
    }

    protected void OnBtnTerminarClicked(object sender, EventArgs e)
    {
        int puntos = 0;
            if (this.radiobtnC.Active)
                puntos++;

        if(this.spinbtn1.Text=="6")
                puntos++;

        if (this.checkbtnA.Active)
                puntos++;

        if (this.checkbtnC.Active)
                puntos++;

        DateTime fecha = this.calIndependencia.GetDate();
        string fechaSeleccionada = fecha.ToShortDateString();
        if (fechaSeleccionada == "16/09/1810"){
                puntos++;
        }

        MessageDialog md = new MessageDialog (null,
               DialogFlags.Modal,
               MessageType.Info,
               ButtonsType.None, "Estos son los puntos obtenidos: \n" +
                                              "Puntos: " + puntos + "\n");
        md.Show();
    }

    protected void OnAceptaClicked(object sender, System.EventArgs e)
    {
        if (password.Text=="123456"&& usuario.Text=="ricardo")
        {
            MessageDialog hola = new MessageDialog(
                null,
                DialogFlags.Modal,
                MessageType.Info,
                ButtonsType.None,
                "Hola Bienvenido"
            );
            hola.Show();
        }

        else
        {
            MessageDialog error = new MessageDialog(

                null,
                DialogFlags.Modal,
                MessageType.Info,
                ButtonsType.None,
                "Error verifique password y/o Usuario"
            );
            error.Show();
        }
    }

    public MainWindow()
        : base(Gtk.WindowType.Toplevel)
    {
        this.Resize (600, 100);
        this.Title = "metafang";
        _main = new VBox ();

        HBox title = new HBox ();
        title.PackStart (new Label ("Login to your Metasploit RPC instance to begin"), true, true, 0);

        _main.PackStart (title, true, true, 0);

        HBox loginInfo = new HBox ();

        loginInfo.PackStart (new Label ("Host:"), false, false, 20);

        Entry hostEntry = new Entry ();
        loginInfo.PackStart (hostEntry, false, false, 0);

        loginInfo.PackStart (new Label ("User:"), false, false, 20);

        Entry userEntry = new Entry ();
        loginInfo.PackStart (userEntry, false, false, 0);

        loginInfo.PackStart (new Label ("Pass:"), false, false, 20);

        Entry passEntry = new Entry ();
        loginInfo.PackStart (passEntry, false, false, 0);

        _main.PackStart (loginInfo, true, true, 0);

        Button login = new Button ("Login");

        login.Clicked += (object sender, EventArgs e) => {
            try {
                //Console.WriteLine ("Creating session");
                _session = new MetasploitSession (userEntry.Text, passEntry.Text, hostEntry.Text);
                //Console.WriteLine ("Creating manager and getting current list of payloads");
                _manager = new MetasploitManager (_session);
                _payloads = _manager.GetPayloads ();
                BuildWorkspace ();
            } catch {
                MessageDialog md = new MessageDialog (this,
                                       DialogFlags.DestroyWithParent,
                                       MessageType.Error,
                    ButtonsType.Close, "Authentication failed. Please ensure your credentials and API URL are correct.");

                md.Run ();
                md.Destroy ();
            }
        };

        HBox loginBox = new HBox ();
        loginBox.PackStart (login, false, false, 300);

        _main.PackStart (loginBox, true, true, 0);

        _main.ShowAll ();
        this.Add (_main);
    }

        /// <summary>
        ///     Registers the assembly into the Global Assembly Cache
        /// </summary>
        /// <param name="m_fileName">The File name</param>
        public static void RegisterAssembly(string m_fileName)
        {
            string result = string.Empty;
            try
            {   // register the assembly
                result = RegisterAssemblyCode(m_fileName);
            }
            catch (Exception ex)
            {
                result = ex.Message;
            }

            MessageDialog msgDialog = new MessageDialog();

            if (result.ToLower().Contains("success"))
            {   // if the success contains into the message then its okay
                msgDialog.MessageText = "Successfully added to the Global Assembly Cache.";
            }
            else
            {   // failureMessageDetails
                msgDialog.MessageText = "Failed to register the assembly.";
            }

            msgDialog. = result;
            msgDialog.ShowDialog();
        }

    protected virtual void OnBtnokClicked(object sender, System.EventArgs e)
    {
        if(txturl.Text==String.Empty||txtname.Text==String.Empty)
        {
            MessageDialog md = new MessageDialog (this, DialogFlags.DestroyWithParent,MessageType.Error, ButtonsType.Close, "Fields must not be empty");
        int result = md.Run ();
        md.Destroy();
        }
        else
        {
            if(!txturl.Text.Contains("http://"))
            {
                MessageDialog md = new MessageDialog(this,DialogFlags.DestroyWithParent, MessageType.Error, ButtonsType.Close, "Please Introduce a valid URL");
                int result=md.Run();
                md.Destroy();
            }
            else
            {
                url=txturl.Text;
                path=txtpath.CurrentFolder+"/"+txtname.Text;
                Thread down = new Thread(downloadStart);
                down.Start();

            }

        }
    }

    protected void OnDeleteActionActivated(object sender, EventArgs e)
    {
        MessageDialog messageDialog = new MessageDialog (
            this,
            DialogFlags.Modal,
            MessageType.Question,
            ButtonsType.YesNo,
            "¿Quieres eliminar el registro?"
        );
        messageDialog.Title = Title;
        ResponseType response = (ResponseType) messageDialog.Run ();
        messageDialog.Destroy ();

        if (response != ResponseType.Yes)
            return;

        TreeIter treeIter;
        treeView.Selection.GetSelected (out treeIter);
        object id = listStore.GetValue (treeIter, 0);
        string deleteSql = string.Format ("delete from categoria where id={0}", id);
        IDbCommand dbCommand = dbConnection.CreateCommand ();
        dbCommand.CommandText = deleteSql;

        dbCommand.ExecuteNonQuery ();
    }

 public static void ShowWarningMessage(Window window, string message)
 {
     Dialog dialog = new MessageDialog(window, DialogFlags.DestroyWithParent | DialogFlags.Modal,
             MessageType.Warning, ButtonsType.Ok, message);
         dialog.Run();
         dialog.Hide();
 }

    //LOGIN
    protected void OnLoginButtonClicked(object sender, EventArgs e)
    {
        try{
            string connectionString = "Server=localhost;" + "Database=dbprueba;" +
                "User ID=" + userEntry.Text.ToString () + ";" + "Password=" + pwdEntry.Text.ToString ();
            App.Instance.DbConnection = new MySqlConnection (connectionString);
            App.Instance.DbConnection.Open ();

            MainWindow mWin = new MainWindow ();
            mWin.ShowAll ();

            this.Destroy ();

        }
        catch (MySqlException){
            msgDialog = new MessageDialog (
                this, DialogFlags.Modal, MessageType.Error, ButtonsType.Ok, "\t\tConnection Error\t\t\nCannot connect to database");
            msgDialog.Title = "SQL DataBase Error";
            msgDialog.Run ();
            msgDialog.Destroy ();

            pwdEntry.Text = "";

        }
        catch{
            Console.WriteLine ("\nError 404 Not Found");
            Application.Quit ();

        }
    }

    protected void btnEnter_Click(object sender, EventArgs e)
    {
        TeenvioAPI api = new TeenvioAPI (txtUser.Text, txtPlan.Text, txtPassword.Text);

        try{
            api.getServerVersion ();
            MainWindow win = new MainWindow();
            win.Show();
            win.setAPI(api);
            this.Destroy();

        }catch(TeenvioException ex){
            MessageDialog msg = new MessageDialog (this, DialogFlags.Modal, MessageType.Error, ButtonsType.Close, ex.Message);
            msg.Title = "Error";

            ResponseType response = (ResponseType) msg.Run();
            if (response == ResponseType.Close || response == ResponseType.DeleteEvent) {
                msg.Destroy();
            }
        }catch(Exception ex){
            MessageDialog msg = new MessageDialog (this, DialogFlags.Modal, MessageType.Error, ButtonsType.Close, ex.Message);
            msg.Title = "Error";

            ResponseType response = (ResponseType) msg.Run();
            if (response == ResponseType.Close || response == ResponseType.DeleteEvent) {
                msg.Destroy();
            }
        }
    }

    protected virtual void OnExecButtonClicked(object sender, System.EventArgs e)
    {
        resultString = new StringBuilder();
        try{
            parser.Execute(); // Parse selected file
        }
        catch(Exception exc){
            string errorText = "Ouch! Something bad happened and an exception" +
                " was thrown. The error message was: " + Environment.NewLine +
                    exc.Message + Environment.NewLine + Environment.NewLine +
                    "Make sure your input file is formatted correctly and try again.";

            MessageDialog md = new MessageDialog(this, DialogFlags.Modal,
                                             MessageType.Info, ButtonsType.Ok,
                                             errorText);
            ResponseType res = (ResponseType)md.Run();
            if(res == ResponseType.Ok){
                md.Destroy();
                Application.Quit();
            }
        }

        // Append each line
        foreach(string str in parser.GetResults()){
            resultString.Append(str + Environment.NewLine);
        }
        resultString.Append(Environment.NewLine);
        // Enable View and Save buttons
        TextView.Buffer.Text = "File parsed. Press View to view results or Save to save results.";
        //TextView.Buffer.Text = "File parsed. Press Save to save the results.";
        ViewButton.Sensitive = true;
        SaveButton.Sensitive = true;
    }

    protected void OnButton1Clicked(object sender, EventArgs e)
    {
        int puntos=0;
        if(this.radiobutton3.Active)
            puntos++;

        if(this.spinbutton1.Text=="4")
            puntos++;

        if(this.checkbutton1.Active)
            puntos++;

        if(this.checkbutton2.Active)
            puntos++;

        DateTime fecha=this.calendar1.GetDate();
        string fechaseleccionada=fecha.ToShortDateString();
        if(fechaseleccionada=="16/09/1810"){
            puntos++;

            MessageDialog md = new MessageDialog (null,DialogFlags.Modal,MessageType.Info,
            ButtonsType.None, "puntos" +
             puntos);
            md.Show();

        }
    }

        /// <summary>
        /// Shows the message box.
        /// </summary>
        /// <param name="message">The message.</param>
        /// <param name="caption">The caption.</param>
        /// <param name="button">The button.</param>
        /// <param name="icon">The icon.</param>
        /// <returns>The message result.</returns>
        /// <exception cref="ArgumentException">The <paramref name="message"/> is <c>null</c> or whitespace.</exception>
        protected virtual async Task<MessageResult> ShowMessageBox(string message, string caption = "", MessageButton button = MessageButton.OK, MessageImage icon = MessageImage.None)
        {
            // TODO: Add translations for system

            var result = MessageBoxResult.None;
            var messageBoxButton = TranslateMessageButton(button);
            var messageDialog = new MessageDialog(message, caption);

            if (Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.OK) || 
                Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.OKCancel))
            {
                messageDialog.Commands.Add(new UICommand("OK", cmd => result = MessageBoxResult.OK));
            }

            if (Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.YesNo) ||
                Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.YesNoCancel))
            {
                messageDialog.Commands.Add(new UICommand("Yes", cmd => result = MessageBoxResult.Yes));
                messageDialog.Commands.Add(new UICommand("No", cmd => result = MessageBoxResult.No));
            }

            if (Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.OKCancel) ||
                Enum<MessageButton>.Flags.IsFlagSet(button, MessageButton.YesNoCancel))
            {
                messageDialog.Commands.Add(new UICommand("Cancel", cmd => result = MessageBoxResult.Cancel));
                messageDialog.CancelCommandIndex = (uint)messageDialog.Commands.Count - 1;
            }

            await messageDialog.ShowAsync();

            return TranslateMessageBoxResult(result);
        }

    protected void OnButtonLoginClicked(object sender, EventArgs e)
    {
        try{
            string connectionString = "Server=localhost;" + "Database=dbprueba;" +
                "User ID=" + entryUser.Text.ToString () + ";" + "Password=" + entryPwd.Text.ToString ();
            this.mySqlConnection = new MySqlConnection (connectionString);
            this.mySqlConnection.Open ();

            this.SetSizeRequest (500, 250);
            vboxLogin.Visible = false;
            vboxTable.Visible = true;

            OnRefreshActionActivated ();

        }
        catch (MySqlException){
            messageDialog = new MessageDialog (
                this, DialogFlags.Modal, MessageType.Error, ButtonsType.Ok, "\t\tConnection Error\t\t\nCannot connect to database");
            messageDialog.Title = "SQL DataBase Error";
            messageDialog.Run ();
            messageDialog.Destroy ();

            entryUser.Text = "";
            entryPwd.Text = "";

        }
        catch{
            Console.WriteLine ("\nError 404 Not Found");
            Application.Quit ();
        }
    }

    protected void OnBtnGenerateClicked(object sender, EventArgs e)
    {
        try {
            BarcodeLib.Barcode codeBar = new BarcodeLib.Barcode ();
            codeBar.Alignment = BarcodeLib.AlignmentPositions.CENTER;
            codeBar.IncludeLabel = true;
            codeBar.LabelPosition = BarcodeLib.LabelPositions.BOTTOMCENTER;

            BarcodeLib.TYPE bCodeType = (BarcodeLib.TYPE)Enum.Parse (typeof(BarcodeLib.TYPE), cmbBarCodeType.ActiveText.ToString ());
            System.Drawing.Image imgTmpCodeBar = codeBar.Encode (bCodeType, txtData.Text.Trim (), System.Drawing.Color.Black, System.Drawing.Color.White, 300, 300);

            MemoryStream memoryStream = new MemoryStream();
            imgTmpCodeBar.Save(memoryStream, ImageFormat.Png);
            Gdk.Pixbuf pb = new Gdk.Pixbuf (memoryStream.ToArray());

            imgCodeBar.Pixbuf = pb;

        } catch (Exception err) {
            MessageDialog dlg = new MessageDialog (this, DialogFlags.Modal, MessageType.Error, ButtonsType.Ok, string.Format ("Ocurrió un error \n {0}", err.Message));
            dlg.Run ();
            dlg.Destroy ();
            dlg.Dispose ();
            dlg = null;
        }
    }

    protected virtual void OnBtnAnularClicked(object sender, System.EventArgs e)
    {
        MessageDialog Mensaje = null;
        string Tiquete = "", REF = "", c = "";

        REF = txtEfectivo.Text;

        c = "UPDATE `cafeteria_transacciones` SET `precio_grabado`= 0.00, `cancelado` = 1 WHERE ID_ticket = '"+REF+"'";
        if (MySQL.consultar(c))
        {
            if( MySQL.Reader.RecordsAffected > 0 )
            {
                Console.WriteLine("RA:" + MySQL.Reader.RecordsAffected);
                Tiquete += Imprimidor.Imprimir("CANCELACION CAFETERIA",1);
                Tiquete += Imprimidor.Imprimir("REF: "+REF,1);
                Imprimidor.Tiquete(Tiquete, "666");

                Mensaje = new MessageDialog(this, DialogFlags.Modal, MessageType.Error, ButtonsType.Close, "Tiquete anulado");
                Mensaje.Title="Éxito";
                Mensaje.Run();
                Mensaje.Destroy();
                txtEfectivo.Text = "";
                return;
            }
        }

        Mensaje = new MessageDialog(this, DialogFlags.Modal, MessageType.Error, ButtonsType.Close, "Tiquete no pudo ser anulado.");
        Mensaje.Title="Error";
        Mensaje.Run();
        Mensaje.Destroy();
        txtEfectivo.GrabFocus();
        return;
    }

    public MainWindow()
        : base(Gtk.WindowType.Toplevel)
    {
        try
        {
        CheckForUpdatesProgress cfup = new CheckForUpdatesProgress(Assembly.GetExecutingAssembly().GetName().Version);
        cfup.Show();
        if (cfup.CheckForUpdates() == false)
            cfup.Destroy();
        }
        catch
        {
            MessageDialog md = new MessageDialog(null, DialogFlags.Modal, MessageType.Error, ButtonsType.Ok,
                "Communication could not be established to our servers: you must be online to use the LunaLua Module Manager.\n\nPress ok so we can self destruct.");
            md.Icon = Image.LoadFromResource("Gtktester.Icons.PNG.256.png").Pixbuf;
            md.WindowPosition = WindowPosition.Center;
            md.Run();
            md.Destroy();
            this.Destroy();
            Environment.Exit(-5);
        }

        Build ();

        if (Program.ProgramSettings.StartMaximized)
            this.Maximize();

        this.hpaned2.Position = 170;
        this.hpaned1.Position = 170;

        OnWindowLoad();

        this.notebook1.CurrentPage = 0;
    }