ConsoleCancelEventArgs クラス
アセンブリ: mscorlib (mscorlib.dll 内)


ユーザーがコンソール アプリケーション プロセスを中断するには、Control 修飾子キーと C コンソール キー (Ctrl + C) を同時に押すか、Control 修飾子キーと Break コンソール キー (Ctrl + Break) を同時に押します。その結果、.NET Framework によって、ConsoleCancelEventArgs オブジェクトが Console.CancelKeyPress イベントのイベント ハンドラに渡されます。
イベント ハンドラの Cancel プロパティを true に設定した場合に Ctrl + C を押すと、プロセスが再開されます。それ以外の場合は、プロセスが終了します。Cancel プロパティを false に設定した場合に Ctrl + Break を押すと、プロセスが終了します。Cancel プロパティを true に設定した場合に Ctrl + Break を押すと、例外がスローされます。

ConsoleCancelEventArgs クラスを使用してイベントを処理する方法を示すコード例を次に示します。
' This example demonstrates: ' the Console.CancelKeyPress event, ' the ConsoleCancelEventHandler delegate, ' the ConsoleCancelEventArgs.SpecialKey property, and ' the ConsoleCancelEventArgs.Cancel property. Imports System Class Sample Public Shared Sub Main() Dim cki As ConsoleKeyInfo ' 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. AddHandler Console.CancelKeyPress, AddressOf 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}" & vbCrLf, cki.Key) ' Exit if the user pressed the 'X' key. If cki.Key = ConsoleKey.X Then Exit While End While End Sub 'Main ' 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 Shared Sub myHandler(ByVal sender As Object, _ ByVal args As ConsoleCancelEventArgs) ' Announce that the event handler has been invoked. Console.WriteLine(vbCrLf & "The 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..." & vbCrLf) End Sub 'myHandler End Class 'Sample ' '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 '
// 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 */
// This example demonstrates: // the Console.CancelKeyPress event, // the ConsoleCancelEventHandler delegate, // the ConsoleCancelEventArgs.SpecialKey property, and // the ConsoleCancelEventArgs.Cancel property. using namespace System; // 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. void OnCancelKeyPressed(Object^ sender, ConsoleCancelEventArgs^ args) { // Announce that the event handler has been invoked. Console::WriteLine("{0}The read operation has been interrupted.", Environment::NewLine); // 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...{0}", Environment::NewLine); } int main() { // 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 += gcnew ConsoleCancelEventHandler(OnCancelKeyPressed); 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. ConsoleKeyInfo^ keyInfo = Console::ReadKey(true); // Announce the name of the key that was pressed . Console::WriteLine(" Key pressed: {0}{1}", keyInfo->Key, Environment::NewLine); // Exit if the user pressed the 'X' key. if (keyInfo->Key == ConsoleKey::X) { break; } } } /* 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 */

System.EventArgs
System.ConsoleCancelEventArgs


Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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ConsoleCancelEventArgs プロパティ

名前 | 説明 | |
---|---|---|
![]() | Cancel | Control 修飾子キーと C コンソール キー (Ctrl + C) を同時に押した場合に現在のプロセスが終了するかどうかを表す値を取得または設定します。 |
![]() | SpecialKey | 現在のプロセスを中断した修飾子キーとコンソール キーの組み合わせを取得します。 |

ConsoleCancelEventArgs メソッド

名前 | 説明 | |
---|---|---|
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 ( Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 ( Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 ( Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 ( Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 ( Object から継承されます。) |

ConsoleCancelEventArgs メンバ
Console.CancelKeyPress イベントのデータを提供します。このクラスは継承できません。
ConsoleCancelEventArgs データ型で公開されるメンバを以下の表に示します。

名前 | 説明 | |
---|---|---|
![]() | Cancel | Control 修飾子キーと C コンソール キー (Ctrl + C) を同時に押した場合に現在のプロセスが終了するかどうかを表す値を取得または設定します。 |
![]() | SpecialKey | 現在のプロセスを中断した修飾子キーとコンソール キーの組み合わせを取得します。 |

名前 | 説明 | |
---|---|---|
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 (Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 (Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 (Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 (Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 (Object から継承されます。) |

- ConsoleCancelEventArgsのページへのリンク