FileDialogPermissionAttribute コンストラクタとは？ わかりやすく解説

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FileDialogPermissionAttribute コンストラクタ

SecurityAction を指定して、FileDialogPermissionAttribute クラスの新しいインスタンスを初期化します。

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

Visual Basic (宣言)
Public Sub New ( _
    action As SecurityAction _
)
Visual Basic (使用法)
Dim action As SecurityAction

Dim instance As New FileDialogPermissionAttribute(action)
C#
public FileDialogPermissionAttribute (
    SecurityAction action
)
C++
public:
FileDialogPermissionAttribute (
    SecurityAction action
)
J#
public FileDialogPermissionAttribute (
    SecurityAction action
)
JScript
public function FileDialogPermissionAttribute
 (
    action : SecurityAction
)

パラメータ

action

SecurityAction 値の 1 つ。

使用例使用例
Visual Basic
' This sample demonstrates the use of the FileDialogPermissionAttribute.
Imports System
Imports System.Reflection
Imports System.Security.Permissions
Imports System.Security
Imports System.IO
Imports Microsoft.VisualBasic



Class [MyClass]

    Public Shared Sub FileDialogPermissionAttributeDemo()
        Try
            PermitOnlyMethod()
        Catch e As Exception
            Console.WriteLine(e.Message.ToString())
        End Try
        Try
            DenyMethod()
        Catch e As Exception
            Console.WriteLine(e.Message.ToString())
        End Try
        Try
            DenyAllMethod()
        Catch e As Exception
            Console.WriteLine(e.Message.ToString())
        End Try
    End Sub 'FileDialogPermissionAttributeDemo


    ' This method demonstrates PermitOnly with the Open property set
 to true.
    <FileDialogPermissionAttribute(SecurityAction.PermitOnly, Open:=True)>
 _
    Public Shared Sub PermitOnlyMethod()
        Console.WriteLine("Executing PermitOnlyMethod.")
        Console.WriteLine("PermitOnly the Open permission.")
        PermitOnlyTest()
    End Sub 'PermitOnlyMethod

    Public Shared Sub PermitOnlyTest()
        Console.WriteLine("Executing PermitOnlyTest.")
        Try
            Dim ps As New
 PermissionSet(PermissionState.None)
            ps.AddPermission(New FileDialogPermission(FileDialogPermissionAccess.Open))
            Console.WriteLine("Demanding permission to open a
 file.")
            ps.Demand()
            Console.WriteLine("Demand succeeded.")
            ps.AddPermission(New FileDialogPermission(FileDialogPermissionAccess.Save))
            Console.WriteLine("Demanding permission to save a
 file.")
            ' This demand should cause an exception.
            ps.Demand()
            ' The TestFailed method is called if an exception is not
 thrown.
        Catch e As Exception
            Console.WriteLine(("An exception was thrown because
 of a save demand: " & e.Message))
        End Try
    End Sub 'PermitOnlyTest


    ' Set the Save property for a Deny action.
    <FileDialogPermissionAttribute(SecurityAction.Deny, Save:=True)> _
    Public Shared Sub DenyMethod()

        Console.WriteLine("Executing DenyMethod.")
        Console.WriteLine("Denying the Save permission.")
        DenyTest()
    End Sub 'DenyMethod

    Public Shared Sub DenyTest()
        Console.WriteLine("Executing DenyTest.")
        Try
            Dim ps As New
 PermissionSet(PermissionState.None)
            ps.AddPermission(New FileDialogPermission(FileDialogPermissionAccess.Open))
            Console.WriteLine("Demanding permission to open a
 file.")
            ps.Demand()
            Console.WriteLine("Demand succeeded.")
            ps.AddPermission(New FileDialogPermission(FileDialogPermissionAccess.Save))
            Console.WriteLine("Demanding permission to save a
 file.")
            ' This demand should cause an exception.
            ps.Demand()
            ' The TestFailed method is called if an exception is not
 thrown.
            TestFailed()
        Catch e As Exception
            Console.WriteLine(("An exception was thrown because
 of an open demand: " & e.Message))
        End Try
    End Sub 'DenyTest


    ' This method demonstrates the use of the FileDialogPermissionAttribute
 to deny all permissions.
    <FileDialogPermissionAttribute(SecurityAction.Deny, Unrestricted:=True)>
 _
    Public Shared Sub DenyAllMethod()
        Console.WriteLine("Executing DenyAllMethod.")
        Console.WriteLine("Denied all FileDialogPermissions ")

        DenyAllTestMethod()
    End Sub 'DenyAllMethod

    ' This method tests to assure permissions have been denied.
    Public Shared Sub DenyAllTestMethod()
        Console.WriteLine("Executing DenyAllTestMethod.")
        Try
            Dim ps As New
 PermissionSet(PermissionState.None)
            ps.AddPermission(New FileDialogPermission(FileDialogPermissionAccess.Open))
            Console.WriteLine("Demanding permission to open a
 file.")
            ' This demand should cause an exception.
            ps.Demand()
            ' The TestFailed method is called if the expected exception
 is not thrown.
            TestFailed()

        Catch e As Exception

            Console.WriteLine(("An exception was thrown because
 of an open demand: " + e.Message))
        End Try
    End Sub 'DenyAllTestMethod

    Public Shared Sub TestFailed()
        Console.WriteLine("Executing TestFailed.")
        Console.WriteLine("Throwing an exception.")
        Throw New Exception()
    End Sub 'TestFailed

    Overloads Shared Sub
 Main(ByVal args() As String)
        FileDialogPermissionAttributeDemo()
    End Sub 'Main
End Class '[MyClass]
C#
// This sample demonstrates the use of the FileDialogPermissionAttribute.
using System;
using System.Reflection;
using System.Security.Permissions;
using System.Security;
using System.IO;

    class MyClass
    {
        public static void
 FileDialogPermissionAttributeDemo()
        {  
            try
            {
                PermitOnlyMethod();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
            }
            try
            {
                DenyMethod();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
            }
            try
            {
                DenyAllMethod();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
            }

        }

        // This method demonstrates PermitOnly with the Open property
 set to true.
        [FileDialogPermissionAttribute(SecurityAction.PermitOnly, Open = true)]
        public static void
 PermitOnlyMethod()
        {
            Console.WriteLine("Executing PermitOnlyMethod.");
            Console.WriteLine("PermitOnly the Open permission.");
            PermitOnlyTest();

        }
    
        public static void
 PermitOnlyTest()
        {
            Console.WriteLine("Executing PermitOnlyTest.");
            try
            {
                PermissionSet ps = new PermissionSet(PermissionState.None);
                ps.AddPermission(
                    new FileDialogPermission(FileDialogPermissionAccess.Open));
                Console.WriteLine("Demanding permission to open a file.");
                ps.Demand();
                Console.WriteLine("Demand succeeded.");
                ps.AddPermission(
                    new FileDialogPermission(FileDialogPermissionAccess.Save));
                Console.WriteLine("Demanding permission to save a file.");
                // This demand should cause an exception.
                ps.Demand();
                // The TestFailed method is called if an exception is
 not thrown.
            }
            catch (Exception e)
            {
                Console.WriteLine("An exception was thrown because of a save
 demand: " + e.Message);
            }
        }

        // Set the Save property for a Deny action.
        [FileDialogPermissionAttribute(SecurityAction.Deny, Save = true)]

        public static void
 DenyMethod()
        {
            Console.WriteLine("Executing DenyMethod.");
            Console.WriteLine("Denying the Save permission.");
            DenyTest();
        }

        public static void
 DenyTest()
        {
            Console.WriteLine("Executing DenyTest.");
            try
            {
                PermissionSet ps = new PermissionSet(PermissionState.None);
                ps.AddPermission(
                    new FileDialogPermission(FileDialogPermissionAccess.Open));
                Console.WriteLine("Demanding permission to open a file.");
                ps.Demand();
                Console.WriteLine("Demand succeeded.");
                ps.AddPermission(
                    new FileDialogPermission(FileDialogPermissionAccess.Save));
                Console.WriteLine("Demanding permission to save a file.");
                // This demand should cause an exception.
                ps.Demand();
                // The TestFailed method is called if an exception is
 not thrown.
                TestFailed();
            }
            catch (Exception e)
            {
                Console.WriteLine("An exception was thrown because of an open
 demand: " + e.Message);
            }
        }

        // This method demonstrates the use of the FileDialogPermissionAttribute
 to deny all permissions.
        [FileDialogPermissionAttribute(SecurityAction.Deny, Unrestricted = true)]
        public static void
 DenyAllMethod()
        {
            Console.WriteLine("Executing DenyAllMethod.");
            Console.WriteLine("Denied all FileDialogPermissions");

            DenyAllTestMethod();
        }
        // This method tests to assure permissions have been denied.
        public static void
 DenyAllTestMethod()
        {
            Console.WriteLine("Executing DenyAllTestMethod.");
            try
            {
                PermissionSet ps = new PermissionSet(PermissionState.None);
                ps.AddPermission(
                new FileDialogPermission(FileDialogPermissionAccess.Open));
                Console.WriteLine("Demanding permission to open a file.");
                // This demand should cause an exception.
                ps.Demand();
                // The TestFailed method is called if the expected exception
 is not thrown.
                TestFailed();
            }

            catch (Exception e)

            {
                Console.WriteLine("An exception was thrown because of an open
 demand: " + e.Message);
            }
        }
        public static void
 TestFailed()
        {
            Console.WriteLine("Executing TestFailed.");
            Console.WriteLine("Throwing an exception.");
            throw new Exception();
        }

        static void Main(string[]
 args)
        {
            FileDialogPermissionAttributeDemo();
        }

    }
C++
// This sample demonstrates the use of the FileDialogPermissionAttribute.
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Runtime::InteropServices;
using namespace System::Security;
using namespace System::IO;
void PermitOnlyTest()
{
   Console::WriteLine( "Executing PermitOnlyTest." );
   try
   {
      PermissionSet^ ps = gcnew PermissionSet( PermissionState::None );
      ps->AddPermission( gcnew FileDialogPermission( FileDialogPermissionAccess::Open
 ) );
      Console::WriteLine( "Demanding permission to open a file." );
      ps->Demand();
      Console::WriteLine( "Demand succeeded." );
      ps->AddPermission( gcnew FileDialogPermission( FileDialogPermissionAccess::Save
 ) );
      Console::WriteLine( "Demanding permission to save a file." );
      
      // This demand should cause an exception.
      ps->Demand();
      
      // The TestFailed method is called if an exception is not thrown.
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "An exception was thrown because of a save demand:
 {0}", e->Message );
   }

}


// This method demonstrates PermitOnly with the Open property set to
 true.

[FileDialogPermissionAttribute(SecurityAction::PermitOnly,Open=true)]
void PermitOnlyMethod()
{
   Console::WriteLine( "Executing PermitOnlyMethod." );
   Console::WriteLine( "PermitOnly the Open permission." );
   PermitOnlyTest();
}


void TestFailed()
{
   Console::WriteLine( "Executing TestFailed." );
   Console::WriteLine( "Throwing an exception." );
   throw gcnew Exception;
}

void DenyTest()
{
   Console::WriteLine( "Executing DenyTest." );
   try
   {
      PermissionSet^ ps = gcnew PermissionSet( PermissionState::None );
      ps->AddPermission( gcnew FileDialogPermission( FileDialogPermissionAccess::Open
 ) );
      Console::WriteLine( "Demanding permission to open a file." );
      ps->Demand();
      Console::WriteLine( "Demand succeeded." );
      ps->AddPermission( gcnew FileDialogPermission( FileDialogPermissionAccess::Save
 ) );
      Console::WriteLine( "Demanding permission to save a file." );
      
      // This demand should cause an exception.
      ps->Demand();
      
      // The TestFailed method is called if an exception is not thrown.
      TestFailed();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "An exception was thrown because of an open demand:
 {0}", e->Message );
   }

}


// Set the Save property for a Deny action.

[FileDialogPermissionAttribute(SecurityAction::Deny,Save=true)]
void DenyMethod()
{
   Console::WriteLine( "Executing DenyMethod." );
   Console::WriteLine( "Denying the Save permission." );
   DenyTest();
}


// This method tests to assure permissions have been denied.
void DenyAllTestMethod()
{
   Console::WriteLine( "Executing DenyAllTestMethod." );
   try
   {
      PermissionSet^ ps = gcnew PermissionSet( PermissionState::None );
      ps->AddPermission( gcnew FileDialogPermission( FileDialogPermissionAccess::Open
 ) );
      Console::WriteLine( "Demanding permission to open a file." );
      
      // This demand should cause an exception.
      ps->Demand();
      
      // The TestFailed method is called if the expected exception is
 not thrown.
      TestFailed();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "An exception was thrown because of an open demand:
 {0}", e->Message );
   }

}


// This method demonstrates the use of the FileDialogPermissionAttribute
 to deny all permissions.

[FileDialogPermissionAttribute(SecurityAction::Deny,Unrestricted=true)]
void DenyAllMethod()
{
   Console::WriteLine( "Executing DenyAllMethod." );
   Console::WriteLine( "Denied all FileDialogPermissions" );
   DenyAllTestMethod();
}

void FileDialogPermissionAttributeDemo()
{
   try
   {
      PermitOnlyMethod();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

   try
   {
      DenyMethod();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

   try
   {
      DenyAllMethod();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

int main()
{
   FileDialogPermissionAttributeDemo();
}
J#
// This sample demonstrates the use of the FileDialogPermissionAttribute.
import System.*;
import System.Reflection.*;
import System.Security.Permissions.*;
import System.Security.*;
import System.IO.*;

class MyClass
{
    public static void FileDialogPermissionAttributeDemo()
    {
        try {
            PermitOnlyMethod();
        }
        catch (System.Exception e) {
            Console.WriteLine(e.get_Message().toString());
        }
        try {
            DenyMethod();
        }
        catch (System.Exception e) {
            Console.WriteLine(e.get_Message().toString());
        }
        try {
            DenyAllMethod();
        }
        catch (System.Exception e) {
            Console.WriteLine(e.get_Message().toString());
        }
    } //FileDialogPermissionAttributeDemo

    // This method demonstrates PermitOnly with the Open property set to
 true.
    /** @attribute FileDialogPermissionAttribute(SecurityAction.PermitOnly, 
        Open = true)
     */
    public static void PermitOnlyMethod()
    {
        Console.WriteLine("Executing PermitOnlyMethod.");
        Console.WriteLine("PermitOnly the Open permission.");
        PermitOnlyTest();
    } //PermitOnlyMethod

    public static void PermitOnlyTest()
    {
        Console.WriteLine("Executing PermitOnlyTest.");
        try {
            PermissionSet ps = new PermissionSet(PermissionState.None);
            ps.AddPermission(new FileDialogPermission(
                FileDialogPermissionAccess.Open));
            Console.WriteLine("Demanding permission to open a file.");
            ps.Demand();
            Console.WriteLine("Demand succeeded.");
            ps.AddPermission(new FileDialogPermission(
                FileDialogPermissionAccess.Save));
            Console.WriteLine("Demanding permission to save a file.");

            // This demand should cause an exception.
            ps.Demand();
        } // The TestFailed method is called if an exception is not
 thrown.
        catch (System.Exception e) {
            Console.WriteLine(("An exception was thrown because " 
                + "of a save demand: " + e.get_Message()));
        }
    } //PermitOnlyTest

    // Set the Save property for a Deny action.
    /** @attribute FileDialogPermissionAttribute(SecurityAction.Deny, 
        Save = true)
     */
    public static void DenyMethod()
    {
        Console.WriteLine("Executing DenyMethod.");
        Console.WriteLine("Denying the Save permission.");
        DenyTest();
    } //DenyMethod

    public static void DenyTest()
    {
        Console.WriteLine("Executing DenyTest.");
        try {
            PermissionSet ps = new PermissionSet(PermissionState.None);
            ps.AddPermission(new FileDialogPermission(
                FileDialogPermissionAccess.Open));
            Console.WriteLine("Demanding permission to open a file.");
            ps.Demand();
            Console.WriteLine("Demand succeeded.");
            ps.AddPermission(new FileDialogPermission(
                FileDialogPermissionAccess.Save));
            Console.WriteLine("Demanding permission to save a file.");

            // This demand should cause an exception.
            ps.Demand();

            // The TestFailed method is called if an exception is not
 thrown.
            TestFailed();
        }
        catch (System.Exception e) {
            Console.WriteLine(("An exception was thrown because " 
                + "of an open demand: " + e.get_Message()));
        }
    } //DenyTest  

    // This method demonstrates the use of the FileDialogPermissionAttribute
    //to deny all permissions.
    /** @attribute FileDialogPermissionAttribute(SecurityAction.Deny, 
        Unrestricted = true)
     */
    public static void DenyAllMethod()
    {
        Console.WriteLine("Executing DenyAllMethod.");
        Console.WriteLine("Denied all FileDialogPermissions");
        DenyAllTestMethod();
    } //DenyAllMethod

    // This method tests to assure permissions have been denied.
    public static void DenyAllTestMethod()
    {
        Console.WriteLine("Executing DenyAllTestMethod.");
        try {
            PermissionSet ps = new PermissionSet(PermissionState.None);
            ps.AddPermission(new FileDialogPermission(
                FileDialogPermissionAccess.Open));
            Console.WriteLine("Demanding permission to open a file.");

            // This demand should cause an exception.
            ps.Demand();

            // The TestFailed method is called if the expected exception
 is       
            //not thrown.
            TestFailed();
        }
        catch (System.Exception e) {
            Console.WriteLine(("An exception was thrown because " 
                + "of an open demand: " + e.get_Message()));
        }
    } //DenyAllTestMethod

    public static void TestFailed()
 throws Exception
    {
        Console.WriteLine("Executing TestFailed.");
        Console.WriteLine("Throwing an exception.");
        throw new Exception();
    } //TestFailed

    public static void main(String[]
 args)
    {
        FileDialogPermissionAttributeDemo();
    } //main
} //MyClass
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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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報バージョン情報
.NET Framework
サポート対象 : 2.0、1.1、1.0
参照参照
関連項目
FileDialogPermissionAttribute クラス
FileDialogPermissionAttribute メンバ
System.Security.Permissions 名前空間

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「FileDialogPermissionAttribute コンストラクタ」の関連用語

1
FileDialogPermissionAttribute メンバ
.NET Framework クラス ライブラリ リファレンス
34% |||||

2
FileDialogPermission メンバ
.NET Framework クラス ライブラリ リファレンス
16% |||||

FileDialogPermissionAttribute コンストラクタのお隣キーワード

FileDialogPermission.IsSubsetOf メソッド

FileDialogPermission.IsUnrestricted メソッド

FileDialogPermission.ToXml メソッド

FileDialogPermission.Union メソッド

FileDialogPermissionAccess 列挙体

FileDialogPermissionAttribute クラス

FileDialogPermissionAttribute コンストラクタ

FileDialogPermissionAttribute プロパティ

FileDialogPermissionAttribute メソッド

FileDialogPermissionAttribute メンバ

FileDialogPermissionAttribute.CreatePermission メソッド

FileDialogPermissionAttribute.Open プロパティ

FileDialogPermissionAttribute.Save プロパティ

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