FileDialogPermission クラスとは？ わかりやすく解説

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FileDialogPermission クラス

ファイル ダイアログを使用してファイルやフォルダにアクセスする機能を制御します。このクラスは継承できません。

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

Visual Basic (宣言)
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class
 FileDialogPermission
    Inherits CodeAccessPermission
    Implements IUnrestrictedPermission
Visual Basic (使用法)
Dim instance As FileDialogPermission
C#
[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public sealed class FileDialogPermission :
 CodeAccessPermission, IUnrestrictedPermission
C++
[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public ref class FileDialogPermission sealed
 : public CodeAccessPermission, IUnrestrictedPermission
J#
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public final class FileDialogPermission extends
 CodeAccessPermission implements IUnrestrictedPermission
JScript
SerializableAttribute 
ComVisibleAttribute(true) 
public final class FileDialogPermission extends
 CodeAccessPermission implements IUnrestrictedPermission
解説解説

一般的に、このアクセス許可は、FileIOPermission が与えられていない場合にユーザーが指定したファイルへのアクセスを制限するために使用されます。

使用例使用例

FileDialogPermission クラス メソッドの動作を示すコード例を次に示します。この例は、メソッドの結果を示すことだけを目的としており、メソッドの一般的な使用方法を示すためのものではありません。FileDialogPermission クラスを使用して特定の FileDialogPermissionAccess 列挙値に対するアクセス許可を要求する例については、FileDialogPermission(FileDialogPermissionAccess) コンストラクタのトピックを参照してください。

Visual Basic
Imports System
Imports System.Security
Imports System.Security.Permissions



<assembly: CLSCompliant(True)>
 

Public Class FileDialogPermissionDemo
    Private fileDialogPerm1 As New
 FileDialogPermission(FileDialogPermissionAccess.Open)
    Private fileDialogPerm2 As New
 FileDialogPermission(FileDialogPermissionAccess.OpenSave)
    Private fileDialogPerm3 As New
 FileDialogPermission(PermissionState.None)
    
    ' IsSubsetOf determines whether the current permission is a subset
 of the
    ' specified permission.
    Private Function IsSubsetOfDemo() As
 Boolean 
        Dim returnValue As Boolean
 = True
        
        
        If fileDialogPerm1.IsSubsetOf(fileDialogPerm2) Then
            Console.WriteLine(fileDialogPerm1.Access.ToString() + "
 is a subset of " _
            + fileDialogPerm2.Access.ToString())
        Else
            Console.WriteLine(fileDialogPerm1.Access.ToString + "
 is not a subset of " + _
            fileDialogPerm2.Access.ToString())
        End If
        
        Return returnValue
    
    End Function 'IsSubsetOfDemo
    
    ' Union creates a new permission that is the union of the current
 permission and the
    ' specified permission.
    Private Function UnionDemo() As
 Boolean 
        Dim returnValue As Boolean
 = True
        
        fileDialogPerm3 = CType(fileDialogPerm1.Union(fileDialogPerm2), FileDialogPermission)
        
        If fileDialogPerm3 Is Nothing
 Then
            Console.WriteLine("The union of " + fileDialogPerm1.Access.ToString()
 + _
            " and " + fileDialogPerm2.Access.ToString()
 + " is null.")
        Else
            Console.WriteLine("The union of " + fileDialogPerm1.Access.ToString()
 + _
            " and " + fileDialogPerm2.Access.ToString()
 + " = " + _
            CType(fileDialogPerm3, FileDialogPermission).Access.ToString())
        End If
        
        Return returnValue
    
    End Function 'UnionDemo
     
    ' Intersect creates and returns a new permission that is the intersection
 of the current
    ' permission and the permission specified.
    Private Function IntersectDemo() As
 Boolean 
        Dim returnValue As Boolean
 = True
        
        fileDialogPerm3 = CType(fileDialogPerm1.Intersect(fileDialogPerm2), FileDialogPermission)
        If Not (fileDialogPerm3 Is
 Nothing) Then
            Console.WriteLine("The intersection of "
 + fileDialogPerm1.Access.ToString() + " and " _
            + fileDialogPerm2.Access.ToString() + " = "
 + CType(fileDialogPerm3, _
            FileDialogPermission).Access.ToString())
        Else
            Console.WriteLine("The intersection of "
 + fileDialogPerm1.Access.ToString() + " and " +
 _
            fileDialogPerm2.Access + " is null.")
        End If
        
        Return returnValue
    
    End Function 'IntersectDemo
    
    ' Copy creates and returns an identical copy of the current permission.
    Private Function CopyDemo() As
 Boolean 
        
        Dim returnValue As Boolean
 = True
        
        fileDialogPerm2 = CType(fileDialogPerm1.Copy(), FileDialogPermission)
        Console.WriteLine("Result of copy = " + fileDialogPerm2.ToString())
        
        Return returnValue
    
    End Function 'CopyDemo
    
    ' ToXml creates an XML encoding of the permission and its current
 state; FromXml reconstructs a
    ' permission with the specified state from the XML encoding.
    Private Function ToFromXmlDemo() As
 Boolean 
        
        Dim returnValue As Boolean
 = True
        
        fileDialogPerm2 = New FileDialogPermission(PermissionState.None)
        fileDialogPerm2.FromXml(fileDialogPerm1.ToXml())
        Console.WriteLine("Result of ToFromXml = "
 + fileDialogPerm2.ToString())
        
        Return returnValue
    
    End Function 'ToFromXmlDemo
    
    ' Invoke all demos.
    Public Function RunDemo() As
 Boolean
        Dim returnCode As Boolean
 = True
        Dim tempReturnCode As Boolean

        ' Call the IsSubsetOf demo.
        If IsSubsetOfDemo() Then
            Console.Out.WriteLine("IsSubsetOf demo completed successfully.")
            tempReturnCode = True
        Else
            Console.Out.WriteLine("IsSubsetOf demo failed.")
            tempReturnCode = False
        End If
        returnCode = tempReturnCode And returnCode

        ' Call the Union demo.
        If UnionDemo() Then
            Console.Out.WriteLine("Union demo completed successfully.")
            tempReturnCode = True
        Else
            Console.Out.WriteLine("Union demo failed.")
            tempReturnCode = False
        End If
        returnCode = tempReturnCode And returnCode

        ' Call the Intersect demo.    
        If IntersectDemo() Then
            Console.Out.WriteLine("Intersect demo completed successfully.")
            tempReturnCode = True
        Else
            Console.Out.WriteLine("Intersect demo failed.")
            tempReturnCode = False
        End If
        returnCode = tempReturnCode And returnCode


        ' Call the Copy demo.    
        If CopyDemo() Then
            Console.Out.WriteLine("Copy demo completed successfully.")
            tempReturnCode = True
        Else
            Console.Out.WriteLine("Copy demo failed.")
            tempReturnCode = False
        End If
        returnCode = tempReturnCode And returnCode

        ' Call the ToFromXml demo.    
        If ToFromXmlDemo() Then
            Console.Out.WriteLine("ToFromXml demo completed successfully.")
            tempReturnCode = True
        Else
            Console.Out.WriteLine("ToFromXml demo failed.")
            tempReturnCode = False
        End If
        returnCode = tempReturnCode And returnCode

        Return returnCode
    End Function
     
    ' Test harness.
    Public Shared Sub Main(ByVal
 args() As String) 
        Try
            Dim democase As New
 FileDialogPermissionDemo()
            Dim returnCode As Boolean
 = democase.RunDemo()
            If returnCode Then
                Console.Out.WriteLine("FileDialogPermission demo
 completed successfully.")
                Console.Out.WriteLine("Press the Enter key to
 exit.")
                Dim consoleInput As String
 = Console.ReadLine()
                System.Environment.ExitCode = 100
            Else
                Console.Out.WriteLine("FileDialogPermission demo
 failed.")
                Console.Out.WriteLine("Press the Enter key to
 exit.")
                Dim consoleInput As String
 = Console.ReadLine()
                System.Environment.ExitCode = 101
            End If
        Catch e As Exception
            Console.Out.WriteLine("FileDialogPermission failed.")
            Console.WriteLine(e.ToString())
            Console.Out.WriteLine("Press the Enter key to exit.")
            Dim consoleInput As String
 = Console.ReadLine()
            System.Environment.ExitCode = 101
        End Try
    
    End Sub 'Main
End Class 'FileDialogPermissionDemo
C#
using System;
using System.Security;
using System.Security.Permissions;

[assembly: CLSCompliant(true)]

public class FileDialogPermissionDemo
{
    FileDialogPermission fileDialogPerm1 = new FileDialogPermission(FileDialogPermissionAccess.Open);
    FileDialogPermission fileDialogPerm2 = new FileDialogPermission(FileDialogPermissionAccess.OpenSave);
    FileDialogPermission fileDialogPerm3 = new FileDialogPermission(PermissionState.None);
    // IsSubsetOf determines whether the current permission is a subset
 of the
    // specified permission.
    private bool IsSubsetOfDemo()
    {
        bool returnValue = true;


        if (fileDialogPerm1.IsSubsetOf(fileDialogPerm2))
        {
            Console.WriteLine(fileDialogPerm1.Access + " is a subset of "
 +
                fileDialogPerm2.Access);
        }
        else
        {
                        Console.WriteLine(fileDialogPerm1.Access + " is not
 a subset of " +
                            fileDialogPerm2.Access);
                    }

        return returnValue;
    }

    // Union creates a new permission that is the union of the current
 permission and the
    // specified permission.
    private bool UnionDemo()
    {
        bool returnValue = true;

                fileDialogPerm3 = (FileDialogPermission)fileDialogPerm1.Union(fileDialogPerm2);

                if (fileDialogPerm3 == null)
                {
                    Console.WriteLine("The union of " + fileDialogPerm1.Access
 + 
                        " and " + fileDialogPerm2.Access + " is null.");
                }
                else
                {
                    Console.WriteLine("The union of " + fileDialogPerm1.Access
 + " and " +
                        fileDialogPerm2.Access + " = " +
                        ((FileDialogPermission)fileDialogPerm3).Access.ToString());
                }

        return returnValue;

    }

    // Intersect creates and returns a new permission that is the intersection
 of the current
    // permission and the permission specified.
    private bool IntersectDemo()
    {
        bool returnValue = true;

        fileDialogPerm3 = (FileDialogPermission)fileDialogPerm1.Intersect(fileDialogPerm2);
        if (fileDialogPerm3 != null)
        {
            Console.WriteLine("The intersection of " + fileDialogPerm1.Access
 + 
                " and " + fileDialogPerm2.Access + " = " +
                ((FileDialogPermission)fileDialogPerm3).Access.ToString());
        }
        else
        {
            Console.WriteLine("The intersection of " + fileDialogPerm1.Access
 + 
                " and " + fileDialogPerm2.Access + " is null.");
        }
        
        return returnValue;
    }

    // Copy creates and returns an identical copy of the current permission.
    private bool CopyDemo()
    {

        bool returnValue = true;

        fileDialogPerm2 = (FileDialogPermission)fileDialogPerm1.Copy();
        Console.WriteLine("Result of copy = " + fileDialogPerm2.ToString());

        return returnValue;
    }

    // ToXml creates an XML encoding of the permission and its current
 state; FromXml reconstructs a
    // permission with the specified state from the XML encoding.
    private bool ToFromXmlDemo()
    {

        bool returnValue = true;

        fileDialogPerm2 = new FileDialogPermission(PermissionState.None);
        fileDialogPerm2.FromXml(fileDialogPerm1.ToXml());
        Console.WriteLine("Result of ToFromXml = " +
            fileDialogPerm2.ToString());

        return returnValue;
    }

    // Invoke all demos.
    public bool RunDemo()
    {
        bool returnCode = true;
        bool tempReturnCode;

        // Call IsSubsetOf demo.
        if (tempReturnCode = IsSubsetOfDemo()) Console.Out.WriteLine("IsSubsetOf
 demo completed successfully.");
        else Console.Out.WriteLine("IsSubsetOf demo failed.");
        returnCode = tempReturnCode && returnCode;

        // Call Union demo.
        if (tempReturnCode = UnionDemo()) Console.Out.WriteLine("Union
 demo completed successfully.");
        else Console.Out.WriteLine("Union demo failed.");
        returnCode = tempReturnCode && returnCode;

        // Call Intersect demo.
        if (tempReturnCode = IntersectDemo()) Console.Out.WriteLine("Intersect
 demo completed successfully.");
        else Console.Out.WriteLine("Intersect demo failed.");
        returnCode = tempReturnCode && returnCode;


        // Call Copy demo.
        if (tempReturnCode = CopyDemo()) Console.Out.WriteLine("Copy
 demo completed successfully.");
        else Console.Out.WriteLine("Copy demo failed.");
        returnCode = tempReturnCode && returnCode;

        // Call ToFromXml demo.
        if (tempReturnCode = ToFromXmlDemo()) Console.Out.WriteLine("ToFromXml
 demo completed successfully.");
        else Console.Out.WriteLine("ToFromXml demo failed.");
        returnCode = tempReturnCode && returnCode;

        return (returnCode);

    }
    // Test harness.
    public static void Main(String[]
 args)
    {
        try
        {
            FileDialogPermissionDemo democase = new FileDialogPermissionDemo();
            bool returnCode = democase.RunDemo();
            if (returnCode)
            {
                Console.Out.WriteLine("FileDialogPermission demo completed successfully.");
                Console.Out.WriteLine("Press the Enter key to exit.");
                string consoleInput = Console.ReadLine();
                System.Environment.ExitCode = 100;
            }
            else
            {
                Console.Out.WriteLine("FileDialogPermission demo failed.");
                Console.Out.WriteLine("Press the Enter key to exit.");
                string consoleInput = Console.ReadLine();
                System.Environment.ExitCode = 101;
            }
        }
        catch (Exception e)
        {
            Console.Out.WriteLine("FileDialogPermission failed.");
            Console.WriteLine(e.ToString());
            Console.Out.WriteLine("Press the Enter key to exit.");
            string consoleInput = Console.ReadLine();
            System.Environment.ExitCode = 101;
        }
    }
}
C++
using namespace System::Runtime::InteropServices;
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;

// This class generates FileDialogPermission objects.

[assembly:CLSCompliant(true)];
public ref class FileDialogPermissionDemo
{
private:

    // IsSubsetOf determines whether the current permission is a subset
 of the 
    // specified permission.
    bool IsSubsetOfDemo()
    {
        bool returnValue = true;
        FileDialogPermission^ fileDialogIdPerm1 = gcnew FileDialogPermission(FileDialogPermissionAccess::Open
 );
        FileDialogPermission^ fileDialogIdPerm2 = gcnew FileDialogPermission( FileDialogPermissionAccess::OpenSave
 );
        if ( fileDialogIdPerm1->IsSubsetOf( fileDialogIdPerm2
 ) )
        {
            Console::WriteLine( "{0} is a subset of {1}", fileDialogIdPerm1->Access,
 fileDialogIdPerm2->Access );
        }
        else
        {
            Console::WriteLine( "{0} is not a subset of {1}", fileDialogIdPerm1->Access,
 fileDialogIdPerm2->Access );
        }

        return returnValue;
    }


    // Union creates a new permission that is the union of the current
 permission and the 
    // specified permission.
    bool UnionDemo()
    {
        bool returnValue = true;
        FileDialogPermission^ fileDialogIdPerm1 = gcnew FileDialogPermission(FileDialogPermissionAccess::Open
 );
        FileDialogPermission^ fileDialogIdPerm2 = gcnew FileDialogPermission( FileDialogPermissionAccess::OpenSave
 );
        FileDialogPermission^ fileDialogIdPerm3 = gcnew FileDialogPermission(PermissionState::None);
        fileDialogIdPerm3 = dynamic_cast<FileDialogPermission^>(fileDialogIdPerm1->Union(
 fileDialogIdPerm2 ));
        if ( fileDialogIdPerm3 == nullptr )
        {
            Console::WriteLine( "The union of {0} and {1} is null.",
 
                fileDialogIdPerm1->Access, fileDialogIdPerm2->Access );
        }
        else
        {
            Console::WriteLine( "The union of {0} and {1} = {2}", 
                fileDialogIdPerm1->Access, fileDialogIdPerm2->Access, (dynamic_cast<FileDialogPermission^>(fileDialogIdPerm3))->Access
 );
        }
        return returnValue;
    }


    // Intersect creates and returns a new permission that is the intersection
 of the current 
    // permission and the permission specified.
    bool IntersectDemo()
    {
        bool returnValue = true;
        FileDialogPermission^ fileDialogIdPerm1 = 
            gcnew FileDialogPermission(FileDialogPermissionAccess::Open );
        FileDialogPermission^ fileDialogIdPerm2 = 
            gcnew FileDialogPermission( FileDialogPermissionAccess::OpenSave );

        FileDialogPermission^ fileDialogIdPerm3 = 
            gcnew FileDialogPermission(PermissionState::None);

        //Console.WriteLine("\tfileDialogIdPerm2 = " +fileDialogIdPerm2.ToString());
        fileDialogIdPerm3 = dynamic_cast<FileDialogPermission^>(fileDialogIdPerm1->Intersect(
 fileDialogIdPerm2 ));
        if ( fileDialogIdPerm3 != nullptr )
        {
            Console::WriteLine( "The intersection of {0} and {1} = {2}",
 
                fileDialogIdPerm1->Access, fileDialogIdPerm2->Access, (dynamic_cast<FileDialogPermission^>(fileDialogIdPerm3))->Access
 );
        }
        else
        {
            Console::WriteLine( "The intersection of {0} and {1} is null.",
 
                fileDialogIdPerm1->Access, fileDialogIdPerm2->Access );
        }

        return returnValue;
    }


    // Copy creates and returns an identical copy of the current permission.
    bool CopyDemo()
    {
        bool returnValue = true;
        FileDialogPermission^ fileDialogIdPerm1 = gcnew FileDialogPermission(FileDialogPermissionAccess::Open
 );
        FileDialogPermission^ fileDialogIdPerm2 = gcnew FileDialogPermission( FileDialogPermissionAccess::OpenSave
 );

        FileDialogPermission^ fileDialogIdPerm3 = gcnew FileDialogPermission(PermissionState::None);

        fileDialogIdPerm2 = dynamic_cast<FileDialogPermission^>(fileDialogIdPerm1->Copy());
        Console::WriteLine( "Result of copy = {0}", fileDialogIdPerm2 );

        return returnValue;
    }


    // ToXml creates an XML encoding of the permission and its current
 state; FromXml reconstructs a 
    // permission with the specified state from the XML encoding. 
    bool ToFromXmlDemo()
    {
        bool returnValue = true;
        FileDialogPermission^ fileDialogIdPerm1 = gcnew FileDialogPermission(FileDialogPermissionAccess::Open
 );
        FileDialogPermission^ fileDialogIdPerm2 = gcnew FileDialogPermission( FileDialogPermissionAccess::OpenSave
 );

        FileDialogPermission^ fileDialogIdPerm3 = gcnew FileDialogPermission(PermissionState::None);

        fileDialogIdPerm2 = gcnew FileDialogPermission( PermissionState::None );
        fileDialogIdPerm2->FromXml( fileDialogIdPerm1->ToXml() );
        Console::WriteLine( "Result of ToFromXml = {0}", fileDialogIdPerm2
 );

        return returnValue;
    }


public:

    // Invoke all demos.
    bool RunDemo()
    {
        bool returnCode = true;
        bool tempReturnCode;

        // Call IsSubsetOf demo.
        if ( tempReturnCode = IsSubsetOfDemo() )
            Console::WriteLine( "IsSubsetOf demo completed successfully."
 );
        else
            Console::WriteLine( "IsSubsetOf demo failed." );

        returnCode = tempReturnCode && returnCode;

        // Call Union demo.
        if ( tempReturnCode = UnionDemo() )
            Console::WriteLine( "Union demo completed successfully." );
        else
            Console::WriteLine( "Union demo failed." );

        returnCode = tempReturnCode && returnCode;

        // Call Intersect demo. 
        if ( tempReturnCode = IntersectDemo() )
            Console::WriteLine( "Intersect demo completed successfully."
 );
        else
            Console::WriteLine( "Intersect demo failed." );

        returnCode = tempReturnCode && returnCode;

        // Call Copy demo. 
        if ( tempReturnCode = CopyDemo() )
            Console::WriteLine( "Copy demo completed successfully." );
        else
            Console::WriteLine( "Copy demo failed." );

        returnCode = tempReturnCode && returnCode;

        // Call ToFromXml demo. 
        if ( tempReturnCode = ToFromXmlDemo() )
            Console::WriteLine( "ToFromXml demo completed successfully."
 );
        else
            Console::WriteLine( "ToFromXml demo failed." );

        returnCode = tempReturnCode && returnCode;
        return (returnCode);
    }

};


// Test harness.
int main()
{
    try
    {
        FileDialogPermissionDemo^ democase = gcnew FileDialogPermissionDemo;
        bool returnCode = democase->RunDemo();
        if ( returnCode )
        {
            Console::WriteLine( "FileDialogPermission demo completed successfully."
 );
            Console::WriteLine( "Press the Enter key to exit." );
            Console::ReadLine();
            System::Environment::ExitCode = 100;
        }
        else
        {
            Console::WriteLine( "FileDialogPermission demo failed." );
            Console::WriteLine( "Press the Enter key to exit." );
            Console::ReadLine();
            System::Environment::ExitCode = 101;
        }
    }
    catch ( Exception^ e ) 
    {
        Console::WriteLine( "FileDialogPermission failed." );
        Console::WriteLine( e );
        Console::WriteLine( "Press the Enter key to exit." );
        Console::ReadLine();
        System::Environment::ExitCode = 101;
    }

}
J#
// This sample demonstrates the IsSubsetOf, Union, Intersect, Copy,
 
// ToXml and FromXml methods
// of the FileDialogPermission class.
import System .* ;
import System.Security .* ;
import System.Security.Permissions .* ;

/** @assembly CLSCompliant(true)
 */

public class FileDialogPermissionDemo
{
    // IsSubsetOf determines whether the current permission is a subset
 of the
    // specified permission.
    private boolean IsSubsetOfDemo() 
    {
        boolean returnValue = true;
        FileDialogPermissionAccess fileDialog1[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermissionAccess fileDialog2[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermission fileDialogIdPerm1[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm2[] = 
            new FileDialogPermission[1];
        FileDialogGenerator fileDialogGen1 =  
            new FileDialogGenerator();
        FileDialogGenerator fileDialogGen2 =  
            new FileDialogGenerator();
        fileDialogGen1.ResetIndex();
        while(fileDialogGen1.CreateFileDialog
            (fileDialogIdPerm1, fileDialog1)) {
            if (fileDialogIdPerm1[0] == null)
 {
                continue ;
            }
            fileDialogGen2.ResetIndex();
            Console.WriteLine("**********************" 
                + "**********************************\n");
            
            while(fileDialogGen2.CreateFileDialog(
                fileDialogIdPerm2, fileDialog2)) {
                if (fileDialogIdPerm2[0] == null)
 {
                    continue ;
                }
                try {
                    if (fileDialogIdPerm1[0].
                        IsSubsetOf(fileDialogIdPerm2[0])) {
                        Console.WriteLine((fileDialogIdPerm1[0].get_Access() 
                            + " is a subset of " 
                            + fileDialogIdPerm2[0].get_Access()));
                    }
                    else {
                        Console.WriteLine((fileDialogIdPerm1[0].get_Access() 
                            + " is not a subset of " + 
                        fileDialogIdPerm2[0].get_Access()));
                    }
                }
                catch(System.Exception  e){
                    Console.WriteLine(("An exception was thrown " 
                        + "for subset :" + fileDialogIdPerm1[0]
 
                        + "\n" + fileDialogIdPerm2[0] + "\n"
 + e));
                        returnValue = false;
                }
            }
        }
        return returnValue ;
    } //IsSubsetOfDemo

    // Union creates a new permission that is the union of 
    // the current permission and the
    // specified permission.
    private boolean UnionDemo() 
    {
        boolean returnValue = true;
        FileDialogPermissionAccess fileDialog1[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermissionAccess fileDialog2[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermission fileDialogIdPerm1[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm2[] = 
            new FileDialogPermission[1];
        IPermission fileDialogIdPerm3;
        FileDialogGenerator fileDialogGen1 =  
            new FileDialogGenerator();
        FileDialogGenerator fileDialogGen2 =  
            new FileDialogGenerator();
        fileDialogGen1.ResetIndex();
        while(fileDialogGen1.CreateFileDialog(fileDialogIdPerm1,
 
            fileDialog1)) {
            if (fileDialogIdPerm1[0] == null)
 {
                continue ;
            }
            Console.WriteLine("************************" 
                + "**********************************\n");
            fileDialogGen2.ResetIndex();
            
            while(fileDialogGen2.CreateFileDialog(fileDialogIdPerm2,
 
                fileDialog2)) {
                if (fileDialogIdPerm2[0] == null)
 {
                    continue ;
                }
                fileDialogIdPerm3 =((FileDialogPermission)(
                    fileDialogIdPerm1[0].Union(fileDialogIdPerm2[0])));
                fileDialogIdPerm3 = fileDialogIdPerm1[0].
                    Union(fileDialogIdPerm2[0]);
                
                if (fileDialogIdPerm3 == null)
 {
                    Console.WriteLine(("The union of " + fileDialog1[0]
 
                        + " and " + fileDialog2[0] + " is null."));
                }
                else {
                    Console.WriteLine(("The union of " 
                        + fileDialogIdPerm1[0].get_Access() + " and " 
                        + fileDialogIdPerm2[0].get_Access() + " = " 
                        + ((FileDialogPermission)(fileDialogIdPerm3)).
                        get_Access().ToString()));
                }
            }
        }
        return returnValue ;
    } //UnionDemo

    // Intersect creates and returns a new permission that is the 
    // intersection of the current
    // permission and the permission specified.
    private boolean IntersectDemo() 
    {
        boolean returnValue = true;
        FileDialogPermissionAccess fileDialog1[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermissionAccess fileDialog2[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermission fileDialogIdPerm1[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm2[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm3 = null;
        FileDialogGenerator fileDialogGen1 =  
            new FileDialogGenerator();
        FileDialogGenerator fileDialogGen2 =  
            new FileDialogGenerator();
        fileDialogGen1.ResetIndex();
        while(fileDialogGen1.CreateFileDialog(
            fileDialogIdPerm1, fileDialog1)) {
            if (fileDialogIdPerm1[0] == null)
 {
                continue ;
            }
            Console.WriteLine("***************************" 
                + "*******************************\n");
            fileDialogGen2.ResetIndex();
            
            while(fileDialogGen2.CreateFileDialog(
                fileDialogIdPerm2, fileDialog2)) {
                if (fileDialogIdPerm2[0] == null)
 {
                    continue ;
                }
                
                fileDialogIdPerm3 =((FileDialogPermission)
                    (fileDialogIdPerm1[0].Intersect
                    (fileDialogIdPerm2[0])));
                if (fileDialogIdPerm3  != null)
 {
                    Console.WriteLine(("The intersection of " 
                        + fileDialog1[0] + " and " + fileDialog2[0] 
                        + " = " +((FileDialogPermission)(fileDialogIdPerm3)).
                        get_Access().ToString()));
                }
                else {
                    Console.WriteLine(("The intersection of " 
                        + fileDialog1[0] + " and " + fileDialog2[0] 
                        + " is null."));
                }
            }
        }
        return returnValue ;
    } //IntersectDemo

    // Copy creates and returns an identical copy of the current permission.
    private boolean CopyDemo() 
    {
        boolean returnValue = true;
        FileDialogPermissionAccess fileDialog1[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermission fileDialogIdPerm1[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm2[] = 
            new FileDialogPermission[1];
        FileDialogGenerator fileDialogGen1 =  
            new FileDialogGenerator();
        FileDialogGenerator fileDialogGen2 =  
            new FileDialogGenerator();

        fileDialogGen1.ResetIndex();
        while(fileDialogGen1.CreateFileDialog(fileDialogIdPerm1,
 
            fileDialog1)) {
            if ( fileDialogIdPerm1[0] == null
  ) {
                continue ;
            }
            fileDialogGen2.ResetIndex();
            Console.WriteLine("************************" 
                + "********************************\n");
            try {
                fileDialogIdPerm2[0] =(
                    (FileDialogPermission)(fileDialogIdPerm1[0].Copy()));
                Console.WriteLine(("Result of copy = " 
                    + fileDialogIdPerm2[0].ToString()));
            } 
            catch(System.Exception  e) {
                Console.WriteLine(("Copy failed :" 
                    + fileDialogIdPerm1[0].ToString() + e));
                continue ;
            }
        }
        return returnValue ;
    } //CopyDemo   

    // ToXml creates an XML encoding of the permission and its current
 
    // state; FromXml reconstructs a
    // permission with the specified state from the XML encoding.
    private boolean ToFromXmlDemo() 
    {
        boolean returnValue = true;      
        FileDialogPermissionAccess fileDialog1[] = 
            new FileDialogPermissionAccess[1];
        FileDialogPermission fileDialogIdPerm1[] = 
            new FileDialogPermission[1];
        FileDialogPermission fileDialogIdPerm2[] = 
            new FileDialogPermission[1];
        FileDialogGenerator fileDialogGen1 =  
            new FileDialogGenerator();
        FileDialogGenerator fileDialogGen2 =  
            new FileDialogGenerator();
        fileDialogGen1.ResetIndex();
        while(fileDialogGen1.CreateFileDialog(fileDialogIdPerm1,
 
            fileDialog1)) {
            if (fileDialogIdPerm1[0] == null)
 {
                continue ;
            }
            Console.WriteLine("************************" 
                + "********************************\n");
            fileDialogGen2.ResetIndex();
            try {
                fileDialogIdPerm2[0] = 
                    new FileDialogPermission(PermissionState.None);
                fileDialogIdPerm2[0].FromXml(fileDialogIdPerm1[0].ToXml());
                Console.WriteLine(("Result of ToFromXml = " 
                    + fileDialogIdPerm2[0].ToString()));
            }
            catch(System.Exception  e) {
                Console.WriteLine(("ToFromXml failed :" 
                    + fileDialogIdPerm1[0].ToString() + e));
                continue ;
            }
        }
        return returnValue ;
    } //ToFromXmlDemo    

    // Invoke all demos.
    public boolean RunDemo() 
    {
        boolean returnCode = true;
        boolean tempReturnCode;

        // Call IsSubsetOf demo.
        if (tempReturnCode = IsSubsetOfDemo()) {
            Console.get_Out().WriteLine("IsSubsetOf demo " 
                + "completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("IsSubsetOf demo failed.");
        }
        returnCode = tempReturnCode && returnCode;

        // Call Union demo.
        if (tempReturnCode = UnionDemo()) {
            Console.get_Out().WriteLine("Union demo " 
                + "completed successfully.");
        }
        else {
            Console.get_Out().WriteLine("Union demo failed.");
        }
        returnCode = tempReturnCode && returnCode;

        // Call Intersect demo.
        if (tempReturnCode = IntersectDemo()) {
            Console.get_Out().WriteLine("Intersect demo completed " 
                + "successfully.");
        }
        else {
            Console.get_Out().WriteLine("Intersect demo failed.");
        }
        returnCode = tempReturnCode && returnCode;

        // Call Copy demo.
        if (tempReturnCode = CopyDemo()) {
            Console.get_Out().WriteLine("Copy demo completed " 
                + "successfully.");
        }
        else {
            Console.get_Out().WriteLine("Copy demo failed.");
        }
        returnCode = tempReturnCode && returnCode;

        // Call ToFromXml demo.
        if (tempReturnCode = ToFromXmlDemo()) {
            Console.get_Out().WriteLine("ToFromXml demo completed " 
                + "successfully.");
        }
        else {
            Console.get_Out().WriteLine("ToFromXml demo failed.");
        }
        returnCode = tempReturnCode && returnCode;
        return returnCode ;
    } //RunDemo   
 
    // Test harness.
    public static void main(String[]
 args)
    {
        try {
            FileDialogPermissionDemo democase =  
                new FileDialogPermissionDemo();
            boolean returnCode = democase.RunDemo();
            if (returnCode) {
                Console.get_Out().WriteLine("FileDialogPermission demo "
 
                    + "completed successfully.");
                Console.get_Out().WriteLine("Press the Enter key to exit.");
                String consoleInput = Console.ReadLine();
                System.Environment.set_ExitCode(100);
            }
            else {
                Console.get_Out().WriteLine("FileDialogPermission demo "
 
                    + "failed.");
                Console.get_Out().WriteLine("Press the Enter key to exit.");
                String consoleInput = Console.ReadLine();
                System.Environment.set_ExitCode(101);
            }
        }
        catch(System.Exception  e){
            Console.get_Out().WriteLine("FileDialogPermission failed.");
            Console.WriteLine(e.ToString());
            Console.get_Out().WriteLine("Press the Enter key to exit.");
            String consoleInput = Console.ReadLine();
            System.Environment.set_ExitCode(101);
        }
    } //main
} //FileDialogPermissionDemo

// This class generates FileDialogPermission objects.
class FileDialogGenerator
{
    private FileDialogPermissionAccess myFileDialog[] =  
        {FileDialogPermissionAccess.None, 
            FileDialogPermissionAccess.Open, 
            FileDialogPermissionAccess.OpenSave, 
            FileDialogPermissionAccess.Save};   
    private int fileDialogIndex = 0;   

    public FileDialogGenerator() 
    {
        ResetIndex();
    } //FileDialogGenerator

    public void ResetIndex() 
    {
        fileDialogIndex = 0;
    } //ResetIndex   

    // Create a FileDialogPermission.
    public boolean CreateFileDialog(FileDialogPermission fileDialogPerm[],
 
        FileDialogPermissionAccess fileDialog[]) 
    {
        if (fileDialogIndex >= myFileDialog.length) {
            fileDialogPerm[0] = new FileDialogPermission(PermissionState.None);
            fileDialog[0] = FileDialogPermissionAccess.None;
            return false ;
        }
        fileDialog[0] = myFileDialog[fileDialogIndex++];
        try {
            fileDialogPerm[0] = new FileDialogPermission(fileDialog[0]);
            return true ;
        }
        catch(System.Exception  e) {
            Console.WriteLine(("Cannot create FileDialogPermission: " 
                + fileDialog + " " + e));
            fileDialogPerm[0] = new FileDialogPermission(PermissionState.None);
            fileDialog[0] = FileDialogPermissionAccess.None;
            return true ;
        }
    } //CreateFileDialog
} //FileDialogGenerator
継承階層継承階層
System.Object
   System.Security.CodeAccessPermission
    System.Security.Permissions.FileDialogPermission
スレッド セーフスレッド セーフ
この型の public static (Visual Basic では Shared) メンバはすべて、スレッド セーフです。インスタンス メンバの場合は、スレッド セーフであるとは限りません。
プラットフォームプラットフォーム

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
FileDialogPermission メンバ
System.Security.Permissions 名前空間
FileDialogPermissionAttribute
FileDialogPermissionAccess
その他の技術情報
アクセス許可
アクセス許可の要求

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「FileDialogPermission クラス」の関連用語

1
FileDialogPermission コンストラクタ
.NET Framework クラス ライブラリ リファレンス
100% |||||

2
FileDialogPermission プロパティ
.NET Framework クラス ライブラリ リファレンス
74% |||||

3
FileDialogPermissionAccess 列挙体
.NET Framework クラス ライブラリ リファレンス
74% |||||

4
FileDialogPermission.Copy メソッド
.NET Framework クラス ライブラリ リファレンス
74% |||||

5
FileDialogPermission.FromXml メソッド
.NET Framework クラス ライブラリ リファレンス
74% |||||

6
FileDialogPermission.ToXml メソッド
.NET Framework クラス ライブラリ リファレンス
74% |||||

7
FileDialogPermission.Intersect メソッド
.NET Framework クラス ライブラリ リファレンス
70% |||||

8
FileDialogPermission.Union メソッド
.NET Framework クラス ライブラリ リファレンス
58% |||||

9
PermissionSet.AddPermission メソッド
.NET Framework クラス ライブラリ リファレンス
50% |||||

10
FileDialogPermission.Access プロパティ
.NET Framework クラス ライブラリ リファレンス
50% |||||

FileDialogPermission クラスのお隣キーワード

FileDialog.RunDialog メソッド

FileDialog.ShowHelp プロパティ

FileDialog.SupportMultiDottedExtensions プロパティ

FileDialog.Title プロパティ

FileDialog.ToString メソッド

FileDialog.ValidateNames プロパティ

FileDialogPermission クラス

FileDialogPermission コンストラクタ

FileDialogPermission プロパティ

FileDialogPermission メソッド

FileDialogPermission メンバ

FileDialogPermission.Access プロパティ

FileDialogPermission.Copy メソッド

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