AppDomainSetup.AppDomainInitializer プロパティとは何？わかりやすく解説 Weblio辞書

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AppDomainSetup.AppDomainInitializer プロパティ

メモ : このプロパティは、.NET Framework version 2.0 で新しく追加されたものです。

アプリケーションドメインの初期化時に呼び出されるコールバックメソッドを表す AppDomainInitializer デリゲートを取得または設定します。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Property AppDomainInitializer As
 AppDomainInitializer

Visual Basic (使用法)

Dim instance As AppDomainSetup
Dim value As AppDomainInitializer

value = instance.AppDomainInitializer

instance.AppDomainInitializer = value

public AppDomainInitializer AppDomainInitializer { get;
 set; }

C++

public:
property AppDomainInitializer^ AppDomainInitializer {
    AppDomainInitializer^ get ();
    void set (AppDomainInitializer^ value);
}

/** @property */
public AppDomainInitializer get_AppDomainInitializer ()

/** @property */
public void set_AppDomainInitializer (AppDomainInitializer
 value)

JScript

public function get AppDomainInitializer
 () : AppDomainInitializer

public function set AppDomainInitializer
 (value : AppDomainInitializer)

プロパティ値
アプリケーションドメインの初期化時に呼び出されるコールバックメソッドを表す AppDomainInitializer デリゲート。

解説

コールバックメソッドに情報を渡すには、AppDomainInitializerArguments プロパティに文字列の配列を代入します。AppDomain が初期化されるたびに、この配列がコールバックメソッドに渡されます。

このコールバックメソッドは、新たに作成されたアプリケーションドメインのコンテキストで実行されます。

使用例

次のコード例では、AppDomainSetup オブジェクトと、既定のアプリケーションドメインから取得した証拠を使用し、ChildDomain という子のアプリケーションドメインを作成しています。AppDomainInitializer プロパティにコールバックメソッド AppDomainInit を設定し、子のドメインが初期化されたときに呼び出されるようにしています。コールバックメソッドの引数は、文字列の配列として格納し、この配列を AppDomainInitializerArguments プロパティに代入します。子のドメインが作成されると、コールバックメソッドによって、これらの文字列が出力されます。

Visual Basic

Imports System
Imports System.Security.Policy

Public Class Example

    Public Shared Sub Main()

        ' Get a reference to the default application domain.
        '
        Dim current As AppDomain = AppDomain.CurrentDomain

        ' Create the AppDomainSetup that will be used to set up the
 child
        ' AppDomain.
        Dim ads As New AppDomainSetup()

        ' Use the evidence from the default application domain to
        ' create evidence for the child application domain.
        '
        Dim ev As Evidence = New
 Evidence(current.Evidence)

        ' Create an AppDomainInitializer delegate that represents the
 
        ' callback method, AppDomainInit. Assign this delegate to the
        ' AppDomainInitializer property of the AppDomainSetup object.
        '
        Dim adi As New AppDomainInitializer(AddressOf
 AppDomainInit)
        ads.AppDomainInitializer = adi

        ' Create an array of strings to pass as arguments to the callback
        ' method. Assign the array to the AppDomainInitializerArguments
        ' property.
        Dim initArgs() As String
 = {"String1", "String2"}
        ads.AppDomainInitializerArguments = initArgs

        ' Create a child application domain named "ChildDomain",
 using 
        ' the evidence and the AppDomainSetup object.
        '
        Dim ad As AppDomain = _
            AppDomain.CreateDomain("ChildDomain",
 ev, ads)

        Console.WriteLine("Press the Enter key to exit the example
 program.")
        Console.ReadLine()
    End Sub

    ' The callback method invoked when the child application domain
 is
    ' initialized. The method simply displays the arguments that were
    ' passed to it.
    '
    Public Shared Sub AppDomainInit(ByVal
 args() As String)
        Console.WriteLine("AppDomain ""{0}""
 is initialized with these arguments:", _
            AppDomain.CurrentDomain.FriendlyName)
        For Each arg As
 String In args
            Console.WriteLine("    {0}", arg)
        Next
    End Sub
End Class

' This code example produces the following output:
'
'AppDomain "ChildDomain" is initialized with these arguments:
'    String1
'    String2

using System;
using System.Security.Policy;

public class Example
{
    public static void Main()
    {
        // Get a reference to the default application domain.
        //
        AppDomain current = AppDomain.CurrentDomain;

        // Create the AppDomainSetup that will be used to set up the
 child
        // AppDomain.
        AppDomainSetup ads = new AppDomainSetup();

        // Use the evidence from the default application domain to
        // create evidence for the child application domain.
        //
        Evidence ev = new Evidence(current.Evidence);

        // Create an AppDomainInitializer delegate that represents the
 
        // callback method, AppDomainInit. Assign this delegate to the
        // AppDomainInitializer property of the AppDomainSetup object.
        //
        AppDomainInitializer adi = new AppDomainInitializer(AppDomainInit);
        ads.AppDomainInitializer = adi;

        // Create an array of strings to pass as arguments to the callback
        // method. Assign the array to the AppDomainInitializerArguments
        // property.
        string[] initArgs = {"String1", "String2"};
        ads.AppDomainInitializerArguments = initArgs;

        // Create a child application domain named "ChildDomain",
 using 
        // the evidence and the AppDomainSetup object.
        //
        AppDomain ad = AppDomain.CreateDomain("ChildDomain", ev, ads);

        Console.WriteLine("Press the Enter key to exit the example program.");
        Console.ReadLine();
    }

    // The callback method invoked when the child application domain
 is
    // initialized. The method simply displays the arguments that were
    // passed to it.
    //
    public static void AppDomainInit(string[]
 args)
    {
        Console.WriteLine("AppDomain \"{0}\" is initialized with these
 arguments:", 
            AppDomain.CurrentDomain.FriendlyName);
        foreach (string arg in
 args)
        {
            Console.WriteLine("    {0}", arg);
        }
    }
}

/* This code example produces the following output:

AppDomain "ChildDomain" is initialized with these arguments:
    String1
    String2
 */

C++

using namespace System;
using namespace System::Security::Policy;

public ref class AppDomainInitializerExample
{
    // The callback method invoked when the child application domain
 is
    // initialized. The method simply displays the arguments that were
    // passed to it.
    //
public:
    static void AppDomainInit(array<String^>^
 args)
    {
        Console::WriteLine("AppDomain \"{0}\" is initialized with
 these " +
            "arguments:", AppDomain::CurrentDomain->FriendlyName);
        for each (String^ arg in args)
        {
            Console::WriteLine("    {0}", arg);
        }
    }
};

int main()
{
    // Get a reference to the default application domain.
    //
    AppDomain^ currentDomain = AppDomain::CurrentDomain;
    
    // Create the AppDomainSetup that will be used to set up the child
    // AppDomain.
    AppDomainSetup^ domainSetup = gcnew AppDomainSetup();

    // Use the evidence from the default application domain to
    // create evidence for the child application domain.
    //
    Evidence^ evidence = gcnew Evidence(currentDomain->Evidence);

    // Create an AppDomainInitializer delegate that represents the
    // callback method, AppDomainInit. Assign this delegate to the
    // AppDomainInitializer property of the AppDomainSetup object.
    //
    AppDomainInitializer^ domainInitializer =
        gcnew AppDomainInitializer(AppDomainInitializerExample::AppDomainInit);
    domainSetup->AppDomainInitializer = domainInitializer;

    // Create an array of strings to pass as arguments to the callback
    // method. Assign the array to the AppDomainInitializerArguments
    // property.
    array<String^>^ initialArguments = {"String1", "String2"};
    domainSetup->AppDomainInitializerArguments = initialArguments;

    // Create a child application domain named "ChildDomain",
 using
    // the evidence and the AppDomainSetup object.
    //
    AppDomain^ appDomain = AppDomain::CreateDomain("ChildDomain",
        evidence, domainSetup);

    Console::WriteLine("Press the Enter key to exit the example program.");
    Console::ReadLine();
}

/* This code example produces the following output:

AppDomain "ChildDomain" is initialized with these arguments:
String1
String2
*/