System.ConsoleSpecialKey 枚举

方法描述

指定能够中断当前进程的修改键和控制台键的组合。

语法定义(C# System.ConsoleSpecialKey 枚举 的用法)

[SerializableAttribute]
public enum ConsoleSpecialKey

构造函数

构造函数名称 构造函数描述

成员/方法

方法名称 方法描述

提示和注释

ConsoleCancelEventArgs.SpecialKey 属性返回 ConsoleSpecialKey 枚举类型。

同时按某些组合键可向操作系统发出中断当前正在运行的进程的信号。 两个有效的组合键为 ConsoleModifiers.Control 加 Break (Ctrl+Break) 和 ConsoleModifiers.Control 加 ConsoleKey.C (Ctrl+C)。

System.ConsoleSpecialKey 枚举例子

下面的代码示例显示调用关联事件处理程序的 ConsoleSpecialKey 值。

// 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

*/

继承层次结构

命名空间

namespace: System

程序集: mscorlib(在 mscorlib.dll 中)

线程安全

版本信息

.NET Framework 受以下版本支持:4、3.5、3.0、2.0 .NET Framework Client Profile 受以下版本支持:4、3.5 SP1

适用平台

Windows 7, Windows Vista SP1 或更高版本, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008(不支持服务器核心), Windows Server 2008 R2(支持 SP1 或更高版本的服务器核心), Windows Server 2003 SP2 .NET Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表,请参见.NET Framework 系统要求。