ConsoleKeyInfo (Estructura)
Ensamblado: mscorlib (en mscorlib.dll)
El tipo ConsoleKeyInfo no está diseñado para ser creado por los usuarios. En lugar de ello, se devuelve al usuario en respuesta a una llamada al método Console.ReadKey.
El objeto ConsoleKeyInfo describe la constante ConsoleKey y el carácter Unicode, si existe, correspondientes a la tecla presionada de la consola. El objeto ConsoleKeyInfo describe también, en una combinación bit a bit de valores de ConsoleModifiers, si alguna de las teclas modificadoras MAYÚS, ALT o CTRL se presionaron al mismo tiempo que la tecla de la consola.
En el siguiente ejemplo de código se muestra cómo utilizar un objeto ConsoleKeyInfo en una operación de lectura.
// This example demonstrates the Console.ReadKey() method using System; using System.Text; class Sample { public static void Main() { ConsoleKeyInfo cki; // 0 1 2 3 4 5 6 // 123456789012345678901234567890123456879012345678901234567890 String m1 = "This example discovers the console and modifier keys " + "that you press.\n"; String m2 = "Press any combination of CTL, ALT, and SHIFT modifier keys, " + "and a console key.\nPress the Escape (Esc) key to quit: "; String m3 = "You pressed "; String m4 = " (character '{0}')."; StringBuilder sb = new StringBuilder(); // // The Console.TreatControlCAsInput property prevents this example from // ending if you press CTL+C, however all other operating system keys and // shortcuts, such as ALT+TAB or the Windows Logo key, are still in effect. // Console.TreatControlCAsInput = true; Console.WriteLine(m1); do { Console.WriteLine(m2); sb.Length = 0; cki = Console.ReadKey(true); sb.Append(m3); if (cki.Modifiers != 0) { if ((cki.Modifiers & ConsoleModifiers.Alt) != 0) sb.Append("ALT+"); if ((cki.Modifiers & ConsoleModifiers.Shift) != 0) sb.Append("SHIFT+"); if ((cki.Modifiers & ConsoleModifiers.Control) != 0) sb.Append("CTL+"); } sb.Append(cki.Key.ToString()); sb.AppendFormat(m4, cki.KeyChar); sb.AppendLine().AppendLine(); Console.WriteLine(sb.ToString()); } while (cki.Key != ConsoleKey.Escape); // Note: This example requires the Escape (Esc) key. } } /* This example produces results similar to following text: This example discovers the console and modifier keys that you press. Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key. Press the Escape (Esc) key to quit: You pressed A (character 'a'). Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key. Press the Escape (Esc) key to quit: You pressed SHIFT+A (character 'A'). Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key. Press the Escape (Esc) key to quit: You pressed ALT+SHIFT+CTL+A (character ' '). Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key. Press the Escape (Esc) key to quit: You pressed Escape (character '?'). */
// This example demonstrates the Console.ReadKey() method
import System.*;
import System.Text.*;
class Sample
{
public static void main(String[] args)
{
ConsoleKeyInfo cki;
// 0 1 2 3 4 5 6
// 123456789012345678901234567890123456879012345678901234567890
String m1 = "This example discovers the console and modifier keys "
+ "that you press.\n";
String m2 = "Press any combination of CTL, ALT, and SHIFT modifier keys, "
+ "and a console key.\nPress the Escape (Esc) key to quit: ";
String m3 = "You pressed ";
String m4 = " (character '{0}').";
StringBuilder sb = new StringBuilder();
//
// The Console.TreatControlCAsInput property prevents this example from
// ending if you press CTL+C, however all other operating system keys and
// shortcuts, such as ALT+TAB or the Windows Logo key, are still in
// effect.
//
Console.set_TreatControlCAsInput(true);
Console.WriteLine(m1);
do {
Console.WriteLine(m2);
sb.set_Length(0);
cki = Console.ReadKey(true);
sb.Append(m3);
if (!(cki.get_Modifiers().Equals((Int32)0))) {
if (!((cki.get_Modifiers() & ConsoleModifiers.Alt).ToString().
Equals(Convert.ToString(0)))) {
sb.Append("ALT+");
}
if (!((cki.get_Modifiers() & ConsoleModifiers.Shift).ToString().
Equals(Convert.ToString(0)))) {
sb.Append("SHIFT+");
}
if (!((cki.get_Modifiers() & ConsoleModifiers.Control).ToString().
Equals(Convert.ToString(0)))) {
sb.Append("CTL+");
}
}
sb.Append(cki.get_Key().ToString());
sb.AppendFormat(m4, (System.Char)cki.get_KeyChar());
sb.AppendLine().AppendLine();
Console.WriteLine(sb.ToString());
} while (!(cki.get_Key().Equals(ConsoleKey.Escape)));
// Note: This example requires the Escape (Esc) key.
} //main
} //Sample
/*
This example produces results similar to following text:
This example discovers the console and modifier keys that you press.
Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed A (character 'a').
Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed SHIFT+A (character 'A').
Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed ALT+SHIFT+CTL+A (character ' ').
Press any combination of CTL, ALT, and SHIFT modifier keys, and a console key.
Press the Escape (Esc) key to quit:
You pressed Escape (character '?').
*/
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.