ConsoleSpecialKey (Enumeración)
Ensamblado: mscorlib (en mscorlib.dll)
La propiedad ConsoleCancelEventArgs.SpecialKey devuelve el tipo de enumeración ConsoleSpecialKey.
Presionar algunas combinaciones de teclas simultáneamente indica al sistema operativo que interrumpa el proceso que se está ejecutando actualmente. Las dos combinaciones de teclas válidas son ConsoleModifiers.Control más INTER (CTRL+INTER) y ConsoleModifiers.Control más ConsoleKey.C (CTRL+C).
El ejemplo de código siguiente muestra el valor ConsoleSpecialKey que invoca el controlador de eventos asociado.
// This example demonstrates: // the Console.CancelKeyPress event, // the ConsoleCancelEventHandler delegate, // the ConsoleCancelEventArgs.SpecialKey property, and // the ConsoleCancelEventArgs.Cancel property. using System; class Sample { public static void Main() { ConsoleKeyInfo cki; // Clear the screen. Console.Clear(); // Turn off the default system behavior when CTRL+C is pressed. When // Console.TreatControlCAsInput is false, CTRL+C is treated as an // interrupt instead of as input. Console.TreatControlCAsInput = false; // Establish an event handler to process key press events. Console.CancelKeyPress += new ConsoleCancelEventHandler(myHandler); while (true) { // Prompt the user. Console.Write("Press any key, or 'X' to quit, or "); Console.WriteLine("CTRL+C to interrupt the read operation:"); // Start a console read operation. Do not display the input. cki = Console.ReadKey(true); // Announce the name of the key that was pressed . Console.WriteLine(" Key pressed: {0}\n", cki.Key); // Exit if the user pressed the 'X' key. if (cki.Key == ConsoleKey.X) break; } } /* When you press CTRL+C, the read operation is interrupted and the console cancel event handler, myHandler, is invoked. Upon entry to the event handler, the Cancel property is false, which means the current process will terminate when the event handler terminates. However, the event handler sets the Cancel property to true, which means the process will not terminate and the read operation will resume. */ protected static void myHandler(object sender, ConsoleCancelEventArgs args) { // Announce that the event handler has been invoked. Console.WriteLine("\nThe read operation has been interrupted."); // Announce which key combination was pressed. Console.WriteLine(" Key pressed: {0}", args.SpecialKey); // Announce the initial value of the Cancel property. Console.WriteLine(" Cancel property: {0}", args.Cancel); // Set the Cancel property to true to prevent the process from terminating. Console.WriteLine("Setting the Cancel property to true..."); args.Cancel = true; // Announce the new value of the Cancel property. Console.WriteLine(" Cancel property: {0}", args.Cancel); Console.WriteLine("The read operation will resume...\n"); } } /* This code example produces results similar to the following text: Press any key, or 'X' to quit, or CTRL+C to interrupt the read operation: Key pressed: J Press any key, or 'X' to quit, or CTRL+C to interrupt the read operation: Key pressed: Enter Press any key, or 'X' to quit, or CTRL+C to interrupt the read operation: The read operation has been interrupted. Key pressed: ControlC Cancel property: False Setting the Cancel property to true... Cancel property: True The read operation will resume... Key pressed: Q Press any key, or 'X' to quit, or CTRL+C to interrupt the read operation: Key pressed: X */
Windows 98, Windows 2000 SP4, Windows Millennium, Windows Server 2003, Windows XP Media Center, Windows XP Professional x64, Windows XP SP2, Windows XP Starter Edition
.NET Framework no admite todas las versiones de cada plataforma. Para obtener una lista de las versiones admitidas, vea Requisitos del sistema.
