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。
この型のすべてのメンバの一覧については、FileDialogPermission メンバ を参照してください。
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.FileDialogPermission
<Serializable>
NotInheritable Public Class FileDialogPermission Inherits CodeAccessPermission Implements IUnrestrictedPermission
[C#]
[Serializable]
public sealed class FileDialogPermission : CodeAccessPermission, IUnrestrictedPermission
[C++]
[Serializable]
public __gc __sealed class FileDialogPermission : public CodeAccessPermission, IUnrestrictedPermission
[JScript]
public
Serializable
class FileDialogPermission extends CodeAccessPermission implements IUnrestrictedPermission
スレッドセーフ
この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。
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
' This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
' of the FileDialogPermission class.
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic
<Assembly: CLSCompliant(True)>
Public Class FileDialogPermissionDemo
' IsSubsetOf determines whether the current permission is a subset of the
' specified permission.
Private Function IsSubsetOfDemo() As Boolean
Dim returnValue As Boolean = True
Dim fileDialog1, fileDialog2 As FileDialogPermissionAccess
Dim fileDialogIdPerm1, fileDialogIdPerm2 As FileDialogPermission
Dim fileDialogGen1 As New FileDialogGenerator()
Dim fileDialogGen2 As New FileDialogGenerator()
fileDialogGen1.ResetIndex()
While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
If fileDialogIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
fileDialogGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Lf)
While fileDialogGen2.CreateFileDialog(fileDialogIdPerm2, fileDialog2)
If fileDialogIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If
Try
If fileDialogIdPerm1.IsSubsetOf(fileDialogIdPerm2) Then
Console.WriteLine((fileDialogIdPerm1.Access.ToString() & " is a subset of " & fileDialogIdPerm2.Access.ToString()))
Else
Console.WriteLine((fileDialogIdPerm1.Access.ToString() & " is not a subset of " & fileDialogIdPerm2.Access.ToString()))
End If
Catch e As Exception
Console.WriteLine(("An exception was thrown for subset :" & fileDialog1 & ControlChars.Lf & fileDialog2 & ControlChars.Lf & e.ToString()))
returnValue = False
End Try
ContinueWhile2:
End While
ContinueWhile1:
End While
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
Dim fileDialog1, fileDialog2 As FileDialogPermissionAccess
Dim fileDialogIdPerm1, fileDialogIdPerm2 As FileDialogPermission
Dim fileDialogIdPerm3 As IPermission
Dim fileDialogGen1 As New FileDialogGenerator()
Dim fileDialogGen2 As New FileDialogGenerator()
fileDialogGen1.ResetIndex()
While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
If fileDialogIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
Console.WriteLine("**********************************************************" & ControlChars.Lf)
fileDialogGen2.ResetIndex()
While fileDialogGen2.CreateFileDialog(fileDialogIdPerm2, fileDialog2)
If fileDialogIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If
fileDialogIdPerm3 = CType(fileDialogIdPerm1.Union(fileDialogIdPerm2), FileDialogPermission)
fileDialogIdPerm3 = fileDialogIdPerm1.Union(fileDialogIdPerm2)
If fileDialogIdPerm3 Is Nothing Then
Console.WriteLine(("The union of " & fileDialog1.ToString() & " and " & fileDialog2.ToString() & " is null."))
Else
Console.WriteLine(("The union of " & fileDialogIdPerm1.Access.ToString() & " and " & fileDialogIdPerm2.Access.ToString() & " = " & CType(fileDialogIdPerm3, FileDialogPermission).Access.ToString()))
End If
ContinueWhile2:
End While
ContinueWhile1:
End While
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
Dim fileDialog1, fileDialog2 As FileDialogPermissionAccess
Dim fileDialogIdPerm1, fileDialogIdPerm2, fileDialogIdPerm3 As FileDialogPermission
Dim fileDialogGen1 As New FileDialogGenerator()
Dim fileDialogGen2 As New FileDialogGenerator()
fileDialogGen1.ResetIndex()
While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
If fileDialogIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
Console.WriteLine("**********************************************************" & ControlChars.Lf)
fileDialogGen2.ResetIndex()
While fileDialogGen2.CreateFileDialog(fileDialogIdPerm2, fileDialog2)
If fileDialogIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If 'Console.WriteLine("\tfileDialogIdPerm2 = " &fileDialogIdPerm2.ToString());
fileDialogIdPerm3 = CType(fileDialogIdPerm1.Intersect(fileDialogIdPerm2), FileDialogPermission)
If Not (fileDialogIdPerm3 Is Nothing) Then
Console.WriteLine(("The intersection of " & fileDialog1.ToString() & " and " & fileDialog2.ToString() & " = " & CType(fileDialogIdPerm3, FileDialogPermission).Access.ToString()))
Else
Console.WriteLine(("The intersection of " & fileDialog1.ToString() & " and " & fileDialog2.ToString() & " is null."))
End If
ContinueWhile2:
End While
ContinueWhile1:
End While
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
Dim fileDialog1 As FileDialogPermissionAccess
Dim fileDialogIdPerm1, fileDialogIdPerm2 As FileDialogPermission
Dim fileDialogGen1 As New FileDialogGenerator()
Dim fileDialogGen2 As New FileDialogGenerator()
fileDialogGen1.ResetIndex()
While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
If fileDialogIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
fileDialogGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Lf)
Try
fileDialogIdPerm2 = CType(fileDialogIdPerm1.Copy(), FileDialogPermission)
Console.WriteLine(("Result of copy = " & fileDialogIdPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("Copy failed :" & fileDialogIdPerm1.ToString() & e.ToString()))
GoTo ContinueWhile1
End Try
ContinueWhile1:
End While
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
Dim fileDialog1 As FileDialogPermissionAccess
Dim fileDialogIdPerm1, fileDialogIdPerm2 As FileDialogPermission
Dim fileDialogGen1 As New FileDialogGenerator()
Dim fileDialogGen2 As New FileDialogGenerator()
fileDialogGen1.ResetIndex()
While fileDialogGen1.CreateFileDialog(fileDialogIdPerm1, fileDialog1)
If fileDialogIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
Console.WriteLine("********************************************************" & ControlChars.Lf)
fileDialogGen2.ResetIndex()
Try
fileDialogIdPerm2 = New FileDialogPermission(PermissionState.None)
fileDialogIdPerm2.FromXml(fileDialogIdPerm1.ToXml())
Console.WriteLine(("Result of ToFromXml = " & fileDialogIdPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("ToFromXml failed :" & fileDialogIdPerm1.ToString() & e.ToString()))
GoTo ContinueWhile1
End Try
ContinueWhile1:
End While
Return returnValue
End Function 'ToFromXmlDemo
' Invoke all demos.
Public Function RunDemo() As Boolean
Dim returnCode As Boolean = True
Dim tempReturnCode As Boolean
' Call IsSubsetOf demo.
tempReturnCode = IsSubsetOfDemo()
If tempReturnCode Then
Console.Out.WriteLine("IsSubsetOf demo completed successfully.")
Else
Console.Out.WriteLine("IsSubsetOf demo failed.")
End If
returnCode = tempReturnCode AndAlso returnCode
' Call Union demo.
tempReturnCode = UnionDemo()
If tempReturnCode Then
Console.Out.WriteLine("Union demo completed successfully.")
Else
Console.Out.WriteLine("Union demo failed.")
End If
returnCode = tempReturnCode AndAlso returnCode
' Call Intersect demo.
tempReturnCode = IntersectDemo()
If tempReturnCode Then
Console.Out.WriteLine("Intersect demo completed successfully.")
Else
Console.Out.WriteLine("Intersect demo failed.")
End If
returnCode = tempReturnCode AndAlso returnCode
' Call Copy demo.
tempReturnCode = CopyDemo()
If tempReturnCode Then
Console.Out.WriteLine("Copy demo completed successfully.")
Else
Console.Out.WriteLine("Copy demo failed.")
End If
returnCode = tempReturnCode AndAlso returnCode
' Call ToFromXml demo.
tempReturnCode = ToFromXmlDemo()
If tempReturnCode Then
Console.Out.WriteLine("ToFromXml demo completed successfully.")
Else
Console.Out.WriteLine("ToFromXml demo failed.")
End If
returnCode = tempReturnCode AndAlso returnCode
Return returnCode
End Function 'RunDemo
' Test harness.
Public Overloads 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
' This class generates FileDialogPermission objects.
Friend Class FileDialogGenerator
Private myFileDialog As FileDialogPermissionAccess() = {FileDialogPermissionAccess.None, FileDialogPermissionAccess.Open, FileDialogPermissionAccess.OpenSave, FileDialogPermissionAccess.Save}
Private fileDialogIndex As Integer = 0
Public Sub New()
ResetIndex()
End Sub 'New
Public Sub ResetIndex()
fileDialogIndex = 0
End Sub 'ResetIndex
' Create a FileDialogPermission.
Public Function CreateFileDialog(ByRef fileDialogPerm As FileDialogPermission, ByRef fileDialog As FileDialogPermissionAccess) As Boolean
If fileDialogIndex >= myFileDialog.Length Then
fileDialogPerm = New FileDialogPermission(PermissionState.None)
fileDialog = FileDialogPermissionAccess.None
Return False
End If
fileDialog = myFileDialog(fileDialogIndex)
fileDialogIndex = fileDialogIndex + 1
Try
fileDialogPerm = New FileDialogPermission(fileDialog)
Return True
Catch e As Exception
Console.WriteLine(("Cannot create FileDialogPermission: " & fileDialog & " " & e.ToString()))
fileDialogPerm = New FileDialogPermission(PermissionState.None)
fileDialog = FileDialogPermissionAccess.None
Return True
End Try
End Function 'CreateFileDialog
' End of FileDialogGenerator.
[C#]
// This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
// of the FileDialogPermission class.
using System;
using System.Security;
using System.Security.Permissions;
[assembly:CLSCompliant(true)]
public class FileDialogPermissionDemo
{
// IsSubsetOf determines whether the current permission is a subset of the
// specified permission.
private bool IsSubsetOfDemo()
{
bool returnValue = true;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2;
FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1.ResetIndex();
while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1))
{
if(fileDialogIdPerm1 == null) continue;
fileDialogGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while(fileDialogGen2.CreateFileDialog(out fileDialogIdPerm2, out fileDialog2))
{
if(fileDialogIdPerm2 == null) continue;
try
{
if (fileDialogIdPerm1.IsSubsetOf(fileDialogIdPerm2))
{
Console.WriteLine(fileDialogIdPerm1.Access + " is a subset of " +
fileDialogIdPerm2.Access);
}
else
{
Console.WriteLine(fileDialogIdPerm1.Access + " is not a subset of " +
fileDialogIdPerm2.Access);
}
}
catch(Exception e)
{
Console.WriteLine("An exception was thrown for subset :" + fileDialogIdPerm1 + "\n" +
fileDialogIdPerm2 +"\n" + e);
returnValue=false;
}
}
}
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;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2;
IPermission fileDialogIdPerm3;
FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1.ResetIndex();
while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1))
{
if(fileDialogIdPerm1 == null) continue;
Console.WriteLine("**********************************************************\n");
fileDialogGen2.ResetIndex();
while(fileDialogGen2.CreateFileDialog(out fileDialogIdPerm2, out fileDialog2))
{
if(fileDialogIdPerm2 == null) continue;
fileDialogIdPerm3 = (FileDialogPermission)fileDialogIdPerm1.Union(fileDialogIdPerm2);
fileDialogIdPerm3 = fileDialogIdPerm1.Union(fileDialogIdPerm2);
if(fileDialogIdPerm3 == null)
{
Console.WriteLine("The union of " + fileDialog1 + " and " + fileDialog2 + " is null." );
}
else
{
Console.WriteLine("The union of " + fileDialogIdPerm1.Access + " and " +
fileDialogIdPerm2.Access + " = " +
((FileDialogPermission)fileDialogIdPerm3).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;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2,fileDialogIdPerm3;
FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1.ResetIndex();
while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1))
{
if(fileDialogIdPerm1 == null) continue;
Console.WriteLine("**********************************************************\n");
fileDialogGen2.ResetIndex();
while(fileDialogGen2.CreateFileDialog(out fileDialogIdPerm2, out fileDialog2))
{
if(fileDialogIdPerm2 == null) continue;
//Console.WriteLine("\tfileDialogIdPerm2 = " +fileDialogIdPerm2.ToString());
fileDialogIdPerm3 = (FileDialogPermission)fileDialogIdPerm1.Intersect(fileDialogIdPerm2);
if (fileDialogIdPerm3 != null)
{
Console.WriteLine("The intersection of " + fileDialog1 + " and " + fileDialog2 + " = " +
((FileDialogPermission)fileDialogIdPerm3).Access.ToString());
}
else
{
Console.WriteLine("The intersection of " + fileDialog1 + " and " + fileDialog2 + " is null." );
}
}
}
return returnValue;
}
// Copy creates and returns an identical copy of the current permission.
private bool CopyDemo()
{
bool returnValue = true;
FileDialogPermissionAccess fileDialog1;
FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2;
FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1.ResetIndex();
while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1))
{
if(fileDialogIdPerm1 == null) continue;
fileDialogGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
try
{
fileDialogIdPerm2 = (FileDialogPermission)fileDialogIdPerm1.Copy();
Console.WriteLine("Result of copy = " + fileDialogIdPerm2.ToString());
}
catch(Exception e)
{
Console.WriteLine("Copy failed :" + fileDialogIdPerm1.ToString() + e);
continue;
}
}
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;
FileDialogPermissionAccess fileDialog1;
FileDialogPermission fileDialogIdPerm1,fileDialogIdPerm2;
FileDialogGenerator fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1.ResetIndex();
while(fileDialogGen1.CreateFileDialog(out fileDialogIdPerm1, out fileDialog1))
{
if(fileDialogIdPerm1 == null) continue;
Console.WriteLine("********************************************************\n");
fileDialogGen2.ResetIndex();
try
{
fileDialogIdPerm2= new FileDialogPermission(PermissionState.None);
fileDialogIdPerm2.FromXml(fileDialogIdPerm1.ToXml());
Console.WriteLine("Result of ToFromXml = " +
fileDialogIdPerm2.ToString());
}
catch(Exception e)
{
Console.WriteLine("ToFromXml failed :" + fileDialogIdPerm1.ToString() + e);
continue;
}
}
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;
}
}
}
// This class generates FileDialogPermission objects.
internal class FileDialogGenerator
{
private FileDialogPermissionAccess[] myFileDialog =
{
FileDialogPermissionAccess.None,
FileDialogPermissionAccess.Open,
FileDialogPermissionAccess.OpenSave,
FileDialogPermissionAccess.Save};
private int fileDialogIndex = 0;
public FileDialogGenerator()
{
ResetIndex();
}
public void ResetIndex()
{
fileDialogIndex = 0;
}
// Create a FileDialogPermission.
public bool CreateFileDialog(out FileDialogPermission fileDialogPerm,
out FileDialogPermissionAccess fileDialog)
{
if(fileDialogIndex >= myFileDialog.Length)
{
fileDialogPerm = new FileDialogPermission(PermissionState.None);
fileDialog=FileDialogPermissionAccess.None;
return false;
}
fileDialog = myFileDialog[fileDialogIndex++];
try
{
fileDialogPerm = new FileDialogPermission(fileDialog);
return true;
}
catch(Exception e)
{
Console.WriteLine("Cannot create FileDialogPermission: " + fileDialog +" "+e);
fileDialogPerm = new FileDialogPermission(PermissionState.None);
fileDialog=FileDialogPermissionAccess.None;
return true;
}
}
} // End of FileDialogGenerator.
[C++]
// This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
// of the FileDialogPermission class.
#using <mscorlib.dll>
using namespace System::Runtime::InteropServices;
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
[assembly:CLSCompliant(true)];
// This class generates FileDialogPermission objects.
private __gc class FileDialogGenerator
{
private:
FileDialogPermissionAccess myFileDialog[];
int fileDialogIndex;
public:
FileDialogGenerator()
{
ResetIndex();
FileDialogPermissionAccess tempFileDialog[] = {
FileDialogPermissionAccess::None,
FileDialogPermissionAccess::Open,
FileDialogPermissionAccess::OpenSave,
FileDialogPermissionAccess::Save};
myFileDialog = tempFileDialog;
}
void ResetIndex()
{
fileDialogIndex = 0;
}
// Create a FileDialogPermission.
bool CreateFileDialog([Out]FileDialogPermission** fileDialogPerm,
[Out]FileDialogPermissionAccess* fileDialog)
{
if(fileDialogIndex >= myFileDialog->Length)
{
*fileDialogPerm = new FileDialogPermission(PermissionState::None);
*fileDialog=FileDialogPermissionAccess::None;
return false;
}
*fileDialog = myFileDialog[fileDialogIndex++];
try
{
*fileDialogPerm = new FileDialogPermission(*fileDialog);
return true;
}
catch(Exception* e)
{
Console::WriteLine(S"Cannot create FileDialogPermission: {0} {1}", __box(*fileDialog), e);
*fileDialogPerm = new FileDialogPermission(PermissionState::None);
*fileDialog=FileDialogPermissionAccess::None;
return true;
}
}
}; // End of FileDialogGenerator.
public __gc class FileDialogPermissionDemo
{
// IsSubsetOf determines whether the current permission is a subset of the
// specified permission.
private:
bool IsSubsetOfDemo()
{
bool returnValue = true;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission* fileDialogIdPerm1;
FileDialogPermission* fileDialogIdPerm2;
FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1->ResetIndex();
while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1))
{
if(fileDialogIdPerm1 == 0) continue;
fileDialogGen2->ResetIndex();
Console::WriteLine(S"********************************************************\n");
while(fileDialogGen2->CreateFileDialog(&fileDialogIdPerm2, &fileDialog2))
{
if(fileDialogIdPerm2 == 0) continue;
try
{
if (fileDialogIdPerm1->IsSubsetOf(fileDialogIdPerm2))
{
Console::WriteLine(S"{0} is a subset of {1}", __box(fileDialogIdPerm1->Access), __box(fileDialogIdPerm2->Access));
}
else
{
Console::WriteLine(S"{0} is not a subset of {1}", __box(fileDialogIdPerm1->Access), __box(fileDialogIdPerm2->Access));
}
}
catch(Exception* e)
{
Console::WriteLine(S"An exception was thrown for subset :{0}\n{1}\n{2}", fileDialogIdPerm1, fileDialogIdPerm2, e);
returnValue=false;
}
}
}
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;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission* fileDialogIdPerm1;
FileDialogPermission* fileDialogIdPerm2;
IPermission* fileDialogIdPerm3;
FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1->ResetIndex();
while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1))
{
if(fileDialogIdPerm1 == 0) continue;
Console::WriteLine(S"**********************************************************\n");
fileDialogGen2->ResetIndex();
while(fileDialogGen2->CreateFileDialog(&fileDialogIdPerm2, &fileDialog2))
{
if(fileDialogIdPerm2 == 0) continue;
fileDialogIdPerm3 = dynamic_cast<FileDialogPermission*>(fileDialogIdPerm1->Union(fileDialogIdPerm2));
fileDialogIdPerm3 = fileDialogIdPerm1->Union(fileDialogIdPerm2);
if(fileDialogIdPerm3 == 0)
{
Console::WriteLine(S"The union of {0} and {1} is null.", __box(fileDialog1), __box(fileDialog2));
}
else
{
Console::WriteLine(S"The union of {0} and {1} = {2}", __box(fileDialogIdPerm1->Access), __box(fileDialogIdPerm2->Access), __box((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.
private:
bool IntersectDemo()
{
bool returnValue = true;
FileDialogPermissionAccess fileDialog1,fileDialog2;
FileDialogPermission* fileDialogIdPerm1;
FileDialogPermission* fileDialogIdPerm2;
FileDialogPermission* fileDialogIdPerm3;
FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1->ResetIndex();
while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1))
{
if(fileDialogIdPerm1 == 0) continue;
Console::WriteLine(S"**********************************************************\n");
fileDialogGen2->ResetIndex();
while(fileDialogGen2->CreateFileDialog(&fileDialogIdPerm2, &fileDialog2))
{
if(fileDialogIdPerm2 == 0) continue;
//Console.WriteLine("\tfileDialogIdPerm2 = " +fileDialogIdPerm2.ToString());
fileDialogIdPerm3 = dynamic_cast<FileDialogPermission*>(fileDialogIdPerm1->Intersect(fileDialogIdPerm2));
if (fileDialogIdPerm3 != 0)
{
Console::WriteLine(S"The intersection of {0} and {1} = {2}", __box(fileDialog1), __box(fileDialog2), __box((dynamic_cast<FileDialogPermission*>(fileDialogIdPerm3))->Access));
}
else
{
Console::WriteLine(S"The intersection of {0} and {1} is null.", __box(fileDialog1), __box(fileDialog2));
}
}
}
return returnValue;
}
// Copy creates and returns an identical copy of the current permission.
private:
bool CopyDemo()
{
bool returnValue = true;
FileDialogPermissionAccess fileDialog1;
FileDialogPermission* fileDialogIdPerm1;
FileDialogPermission* fileDialogIdPerm2;
FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1->ResetIndex();
while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1))
{
if(fileDialogIdPerm1 == 0) continue;
fileDialogGen2->ResetIndex();
Console::WriteLine(S"********************************************************\n");
try
{
fileDialogIdPerm2 = dynamic_cast<FileDialogPermission*>(fileDialogIdPerm1->Copy());
Console::WriteLine(S"Result of copy = {0}", fileDialogIdPerm2);
}
catch(Exception* e)
{
Console::WriteLine(S"Copy failed :{0}{1}", fileDialogIdPerm1, e);
continue;
}
}
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;
FileDialogPermissionAccess fileDialog1;
FileDialogPermission* fileDialogIdPerm1;
FileDialogPermission* fileDialogIdPerm2;
FileDialogGenerator* fileDialogGen1 = new FileDialogGenerator();
FileDialogGenerator* fileDialogGen2 = new FileDialogGenerator();
fileDialogGen1->ResetIndex();
while(fileDialogGen1->CreateFileDialog(&fileDialogIdPerm1, &fileDialog1))
{
if(fileDialogIdPerm1 == 0) continue;
Console::WriteLine(S"********************************************************\n");
fileDialogGen2->ResetIndex();
try
{
fileDialogIdPerm2= new FileDialogPermission(PermissionState::None);
fileDialogIdPerm2->FromXml(fileDialogIdPerm1->ToXml());
Console::WriteLine(S"Result of ToFromXml = {0}", fileDialogIdPerm2);
}
catch(Exception* e)
{
Console::WriteLine(S"ToFromXml failed :{0}{1}", fileDialogIdPerm1, e);
continue;
}
}
return returnValue;
}
// Invoke all demos.
public:
bool RunDemo()
{
bool returnCode = true;
bool tempReturnCode;
// Call IsSubsetOf demo.
if(tempReturnCode= IsSubsetOfDemo())Console::WriteLine(S"IsSubsetOf demo completed successfully.");
else Console::WriteLine(S"IsSubsetOf demo failed.");
returnCode=tempReturnCode && returnCode;
// Call Union demo.
if(tempReturnCode= UnionDemo())Console::WriteLine(S"Union demo completed successfully.");
else Console::WriteLine(S"Union demo failed.");
returnCode=tempReturnCode && returnCode;
// Call Intersect demo.
if(tempReturnCode= IntersectDemo())Console::WriteLine(S"Intersect demo completed successfully.");
else Console::WriteLine(S"Intersect demo failed.");
returnCode=tempReturnCode && returnCode;
// Call Copy demo.
if(tempReturnCode= CopyDemo())Console::WriteLine(S"Copy demo completed successfully.");
else Console::WriteLine(S"Copy demo failed.");
returnCode=tempReturnCode && returnCode;
// Call ToFromXml demo.
if(tempReturnCode= ToFromXmlDemo())Console::WriteLine(S"ToFromXml demo completed successfully.");
else Console::WriteLine(S"ToFromXml demo failed.");
returnCode=tempReturnCode && returnCode;
return ( returnCode );
}
};
// Test harness.
int main()
{
try
{
FileDialogPermissionDemo* democase = new FileDialogPermissionDemo();
bool returnCode = democase->RunDemo();
if (returnCode)
{
Console::WriteLine(S"FileDialogPermission demo completed successfully.");
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 100;
}
else
{
Console::WriteLine(S"FileDialogPermission demo failed.");
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
catch(Exception* e)
{
Console::WriteLine(S"FileDialogPermission failed.");
Console::WriteLine(e);
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
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をクリックします。
必要条件
名前空間: System.Security.Permissions
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
アセンブリ: Mscorlib (Mscorlib.dll 内)
参照
FileDialogPermission メンバ | System.Security.Permissions 名前空間 | アクセス許可 | アクセス許可の要求 | FileDialogPermissionAttribute | FileDialogPermissionAccess