ReflectionPermission-Klasse
Steuert den Zugriff auf Metadaten durch die System.Reflection-APIs. Diese Klasse kann nicht vererbt werden.
Namespace: System.Security.Permissions
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class ReflectionPermission
Inherits CodeAccessPermission
Implements IUnrestrictedPermission
'Usage
Dim instance As ReflectionPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class ReflectionPermission : CodeAccessPermission, IUnrestrictedPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public ref class ReflectionPermission sealed : public CodeAccessPermission, IUnrestrictedPermission
/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public final class ReflectionPermission extends CodeAccessPermission implements IUnrestrictedPermission
SerializableAttribute
ComVisibleAttribute(true)
public final class ReflectionPermission extends CodeAccessPermission implements IUnrestrictedPermission
Hinweise
Type bildet die Basis für die System.Reflection-Funktionalität. Ohne ReflectionPermission kann Code nur auf die public-Member geladener Assemblys zugreifen. Der Zugriff umfasst u. a. uneingeschränkten Zugriff auf Object.GetType, Zugriff auf exportierte public-Typen durch Type.GetType und Zugriff auf GetTypeFromHandle. Auf einige Eigenschaften von Type, z. B. FullName und Attributes, kann ohne ReflectionPermission zugegriffen werden.
Code mit der entsprechenden ReflectionPermission wird Zugriff auf public-Member, protected-Member und selbst auf private-Member jedes geladenen Type gewährt. Dies umfasst den Zugriff auf Module, Assembly, BaseType und GetInterfaces.
Warnung
Da ReflectionPermission den Zugriff auf private Klassenmember und Metadaten ermöglicht, sollte Internetcode keine ReflectionPermission gewährt werden.
Beispiel
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic
<Assembly: CLSCompliant(True)>
Public Class ReflectionPermissionDemo
' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Function IsSubsetOfDemo() As Boolean
Dim returnValue As Boolean = True
Dim reflection1, reflection2 As ReflectionPermissionFlag
Dim reflectionPerm1, reflectionPerm2 As ReflectionPermission
Dim reflectionGen1 As New ReflectionGenerator()
Dim reflectionGen2 As New ReflectionGenerator()
reflectionGen1.ResetIndex()
While reflectionGen1.CreateReflection(reflection1)
reflectionPerm1 = New ReflectionPermission(reflection1)
reflectionGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Lf)
While reflectionGen2.CreateReflection(reflection2)
reflectionPerm2 = New ReflectionPermission(reflection2)
Try
If reflectionPerm1.IsSubsetOf(reflectionPerm2) Then
Console.WriteLine((reflectionPerm1.Flags.ToString() & " is a subset of " _
& reflectionPerm2.Flags.ToString()))
Else
Console.WriteLine((reflectionPerm1.Flags.ToString() & " is not a subset of " _
& reflectionPerm2.Flags.ToString()))
End If
Catch e As Exception
Console.WriteLine(("An exception was thrown for subset :" & reflectionPerm1.ToString() _
& ControlChars.Lf & reflectionPerm2.ToString() & 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 reflection1, reflection2 As ReflectionPermissionFlag
Dim reflectionPerm1, reflectionPerm2 As ReflectionPermission
Dim reflectionPerm3 As IPermission
Dim reflectionGen1 As New ReflectionGenerator()
Dim reflectionGen2 As New ReflectionGenerator()
reflectionGen1.ResetIndex()
While reflectionGen1.CreateReflection(reflection1)
reflectionPerm1 = New ReflectionPermission(reflection1)
Console.WriteLine("**********************************************************" & ControlChars.Lf)
reflectionGen2.ResetIndex()
While reflectionGen2.CreateReflection(reflection2)
reflectionPerm2 = New ReflectionPermission(reflection2)
reflectionPerm3 = CType(reflectionPerm1.Union(reflectionPerm2), ReflectionPermission)
reflectionPerm3 = reflectionPerm1.Union(reflectionPerm2)
If reflectionPerm3 Is Nothing Then
Console.WriteLine(("The union of " & reflection1.ToString() & " and " _
& reflection2.ToString() & " is null."))
Else
Console.WriteLine(("The union of " & reflectionPerm1.Flags.ToString() & " and " _
& reflectionPerm2.Flags.ToString() & " = " _
& CType(reflectionPerm3, ReflectionPermission).Flags.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 reflection1, reflection2 As ReflectionPermissionFlag
Dim reflectionPerm1, reflectionPerm2, reflectionPerm3 As ReflectionPermission
Dim reflectionGen1 As New ReflectionGenerator()
Dim reflectionGen2 As New ReflectionGenerator()
reflectionGen1.ResetIndex()
While reflectionGen1.CreateReflection(reflection1)
reflectionPerm1 = New ReflectionPermission(reflection1)
Console.WriteLine("**********************************************************" & ControlChars.Lf)
reflectionGen2.ResetIndex()
While reflectionGen2.CreateReflection(reflection2)
reflectionPerm2 = New ReflectionPermission(reflection2)
reflectionPerm3 = CType(reflectionPerm1.Intersect(reflectionPerm2), ReflectionPermission)
If Not (reflectionPerm3 Is Nothing) Then
Console.WriteLine(("The intersection of " & reflection1.ToString() & " and " _
& reflection2.ToString() & " = " _
& CType(reflectionPerm3, ReflectionPermission).Flags.ToString()))
Else
Console.WriteLine(("The intersection of " & reflection1.ToString() & " and " _
& reflection2.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 reflection1 As ReflectionPermissionFlag
Dim reflectionPerm1, reflectionPerm2 As ReflectionPermission
Dim reflectionGen1 As New ReflectionGenerator()
Dim reflectionGen2 As New ReflectionGenerator()
reflectionGen1.ResetIndex()
While reflectionGen1.CreateReflection(reflection1)
reflectionPerm1 = New ReflectionPermission(reflection1)
reflectionGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Lf)
Try
reflectionPerm2 = CType(reflectionPerm1.Copy(), ReflectionPermission)
Console.WriteLine(("Result of copy = " & reflectionPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("Copy failed :" & reflectionPerm1.ToString() & e.ToString()))
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 reflection1 As ReflectionPermissionFlag
Dim reflectionPerm1, reflectionPerm2 As ReflectionPermission
Dim reflectionGen1 As New ReflectionGenerator()
Dim reflectionGen2 As New ReflectionGenerator()
reflectionGen1.ResetIndex()
While reflectionGen1.CreateReflection(reflection1)
reflectionPerm1 = New ReflectionPermission(reflection1)
Console.WriteLine("********************************************************" & ControlChars.Lf)
reflectionGen2.ResetIndex()
Try
reflectionPerm2 = New ReflectionPermission(PermissionState.None)
reflectionPerm2.FromXml(reflectionPerm1.ToXml())
Console.WriteLine(("Result of ToFromXml = " & reflectionPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("ToFromXml failed :" & reflectionPerm1.ToString() & e.ToString()))
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 the 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 the 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 the 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 the 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 the 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 ReflectionPermissionDemo()
Dim returnCode As Boolean = democase.runDemo()
If returnCode Then
Console.Out.WriteLine("ReflectionPermission 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("ReflectionPermission 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("ReflectionPermission demo 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 'ReflectionPermissionDemo
' This class generates ReflectionPermission objects.
Friend Class ReflectionGenerator
Private myReflection As ReflectionPermissionFlag() = {ReflectionPermissionFlag.AllFlags, ReflectionPermissionFlag.MemberAccess, ReflectionPermissionFlag.NoFlags, ReflectionPermissionFlag.ReflectionEmit, ReflectionPermissionFlag.TypeInformation}
Private reflectionIndex As Integer = 0
Public Sub New()
ResetIndex()
End Sub 'New
Public Sub ResetIndex()
reflectionIndex = 0
End Sub 'ResetIndex
' CreateReflection creates a ReflectionPermission object.
Public Function CreateReflection(ByRef reflection As ReflectionPermissionFlag) As Boolean
If reflectionIndex >= myReflection.Length Then
reflection = ReflectionPermissionFlag.NoFlags
reflectionIndex &= 1
Return False
End If
reflection = myReflection(reflectionIndex)
reflectionIndex = reflectionIndex + 1
Return True
End Function
End Class
using System;
using System.Security;
using System.Security.Permissions;
[assembly: CLSCompliant(true)]
public class ReflectionPermissionDemo
{
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
private bool IsSubsetOfDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1, reflection2;
ReflectionPermission reflectionPerm1, reflectionPerm2;
ReflectionGenerator reflectionGen1 = new ReflectionGenerator();
ReflectionGenerator reflectionGen2 = new ReflectionGenerator();
reflectionGen1.ResetIndex();
while (reflectionGen1.CreateReflection(out reflection1))
{
reflectionPerm1 = new ReflectionPermission(reflection1);
reflectionGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while (reflectionGen2.CreateReflection(out reflection2))
{
reflectionPerm2 = new ReflectionPermission(reflection2);
try
{
if (reflectionPerm1.IsSubsetOf(reflectionPerm2))
{
Console.WriteLine(reflectionPerm1.Flags + " is a subset of " +
reflectionPerm2.Flags);
}
else
{
Console.WriteLine(reflectionPerm1.Flags + " is not a subset of " +
reflectionPerm2.Flags);
}
}
catch (Exception e)
{
Console.WriteLine("An exception was thrown for subset :" + reflectionPerm1 + "\n" +
reflectionPerm2 + "\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;
ReflectionPermissionFlag reflection1, reflection2;
ReflectionPermission reflectionPerm1, reflectionPerm2;
IPermission reflectionPerm3;
ReflectionGenerator reflectionGen1 = new ReflectionGenerator();
ReflectionGenerator reflectionGen2 = new ReflectionGenerator();
reflectionGen1.ResetIndex();
while (reflectionGen1.CreateReflection(out reflection1))
{
reflectionPerm1 = new ReflectionPermission(reflection1);
Console.WriteLine("**********************************************************\n");
reflectionGen2.ResetIndex();
while (reflectionGen2.CreateReflection(out reflection2))
{
reflectionPerm2 = new ReflectionPermission(reflection2);
reflectionPerm3 = (ReflectionPermission)reflectionPerm1.Union(reflectionPerm2);
reflectionPerm3 = reflectionPerm1.Union(reflectionPerm2);
if (reflectionPerm3 == null)
{
Console.WriteLine("The union of " + reflection1 + " and " + reflection2 + " is null.");
}
else
{
Console.WriteLine("The union of " + reflectionPerm1.Flags + " and " +
reflectionPerm2.Flags + " = " +
((ReflectionPermission)reflectionPerm3).Flags.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;
ReflectionPermissionFlag reflection1, reflection2;
ReflectionPermission reflectionPerm1, reflectionPerm2, reflectionPerm3;
ReflectionGenerator reflectionGen1 = new ReflectionGenerator();
ReflectionGenerator reflectionGen2 = new ReflectionGenerator();
reflectionGen1.ResetIndex();
while (reflectionGen1.CreateReflection(out reflection1))
{
reflectionPerm1 = new ReflectionPermission(reflection1);
Console.WriteLine("**********************************************************\n");
reflectionGen2.ResetIndex();
while (reflectionGen2.CreateReflection(out reflection2))
{
reflectionPerm2 = new ReflectionPermission(reflection2);
reflectionPerm3 = (ReflectionPermission)reflectionPerm1.Intersect(reflectionPerm2);
if (reflectionPerm3 != null)
{
Console.WriteLine("The intersection of " + reflection1 + " and " + reflection2 + " = " +
((ReflectionPermission)reflectionPerm3).Flags.ToString());
}
else
{
Console.WriteLine("The intersection of " + reflection1 + " and " + reflection2 + " is null.");
}
}
}
return returnValue;
}
//Copy creates and returns an identical copy of the current permission.
private bool CopyDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1;
ReflectionPermission reflectionPerm1, reflectionPerm2;
ReflectionGenerator reflectionGen1 = new ReflectionGenerator();
ReflectionGenerator reflectionGen2 = new ReflectionGenerator();
reflectionGen1.ResetIndex();
while (reflectionGen1.CreateReflection(out reflection1))
{
reflectionPerm1 = new ReflectionPermission(reflection1);
reflectionGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
try
{
reflectionPerm2 = (ReflectionPermission)reflectionPerm1.Copy();
Console.WriteLine("Result of copy = " + reflectionPerm2.ToString());
}
catch (Exception e)
{
Console.WriteLine("Copy failed :" + reflectionPerm1.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;
ReflectionPermissionFlag reflection1;
ReflectionPermission reflectionPerm1, reflectionPerm2;
ReflectionGenerator reflectionGen1 = new ReflectionGenerator();
ReflectionGenerator reflectionGen2 = new ReflectionGenerator();
reflectionGen1.ResetIndex();
while (reflectionGen1.CreateReflection(out reflection1))
{
reflectionPerm1 = new ReflectionPermission(reflection1);
Console.WriteLine("********************************************************\n");
reflectionGen2.ResetIndex();
try
{
reflectionPerm2 = new ReflectionPermission(PermissionState.None);
reflectionPerm2.FromXml(reflectionPerm1.ToXml());
Console.WriteLine("Result of ToFromXml = " +
reflectionPerm2.ToString());
}
catch (Exception e)
{
Console.WriteLine("ToFromXml failed :" + reflectionPerm1.ToString() + e);
continue;
}
}
return returnValue;
}
// Invoke all demos.
public bool runDemo()
{
bool returnCode = true;
bool tempReturnCode;
// Call the IsSubsetOf demo.
if (tempReturnCode = IsSubsetOfDemo()) Console.Out.WriteLine("IsSubsetOf demo completed successfully.");
else Console.Out.WriteLine("IsSubsetOf demo failed.");
returnCode = tempReturnCode && returnCode;
// Call the Union demo.
if (tempReturnCode = UnionDemo()) Console.Out.WriteLine("Union demo completed successfully.");
else Console.Out.WriteLine("Union demo failed.");
returnCode = tempReturnCode && returnCode;
// Call the Intersect demo.
if (tempReturnCode = IntersectDemo()) Console.Out.WriteLine("Intersect demo completed successfully.");
else Console.Out.WriteLine("Intersect demo failed.");
returnCode = tempReturnCode && returnCode;
// Call the Copy demo.
if (tempReturnCode = CopyDemo()) Console.Out.WriteLine("Copy demo completed successfully.");
else Console.Out.WriteLine("Copy demo failed.");
returnCode = tempReturnCode && returnCode;
// Call the 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
{
ReflectionPermissionDemo democase = new ReflectionPermissionDemo();
bool returnCode = democase.runDemo();
if (returnCode)
{
Console.Out.WriteLine("ReflectionPermission demo completed successfully.");
Console.Out.WriteLine("Press the Enter key to exit.");
string consoleInput = Console.ReadLine();
System.Environment.ExitCode = 100;
}
else
{
Console.Out.WriteLine("ReflectionPermission 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("ReflectionPermission demo 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 ReflectionPermission objects.
internal class ReflectionGenerator
{
private ReflectionPermissionFlag[] myReflection =
{
ReflectionPermissionFlag.AllFlags,
ReflectionPermissionFlag.MemberAccess,
ReflectionPermissionFlag.NoFlags,
ReflectionPermissionFlag.ReflectionEmit,
ReflectionPermissionFlag.TypeInformation};
private int reflectionIndex = 0;
public ReflectionGenerator()
{
ResetIndex();
}
public void ResetIndex()
{
reflectionIndex = 0;
}
// CreateReflection creates a ReflectionPermission object.
public bool CreateReflection(out ReflectionPermissionFlag reflection)
{
if (reflectionIndex >= myReflection.Length)
{
reflection = ReflectionPermissionFlag.NoFlags;
reflectionIndex++;
return false;
}
reflection = myReflection[reflectionIndex++];
return true;
}
}
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Runtime::InteropServices;
// This class generates ReflectionPermission objects.
[assembly:CLSCompliant(true)];
private ref class ReflectionGenerator
{
private:
array<ReflectionPermissionFlag>^myReflection;
int reflectionIndex;
public:
ReflectionGenerator()
{
array<ReflectionPermissionFlag>^ temp0 = {ReflectionPermissionFlag::AllFlags,ReflectionPermissionFlag::MemberAccess,ReflectionPermissionFlag::NoFlags,ReflectionPermissionFlag::ReflectionEmit,ReflectionPermissionFlag::TypeInformation};
myReflection = temp0;
ResetIndex();
}
void ResetIndex()
{
reflectionIndex = 0;
}
// CreateReflection creates a ReflectionPermission object.
bool CreateReflection( [Out]ReflectionPermissionFlag * reflection )
{
if ( reflectionIndex >= myReflection->Length )
{
*reflection = ReflectionPermissionFlag::NoFlags;
reflectionIndex++;
return false;
}
*reflection = myReflection[ reflectionIndex++ ];
return true;
}
};
// End of ReflectionGenerator.
public ref class ReflectionPermissionDemo
{
private:
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
bool IsSubsetOfDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1;
ReflectionPermissionFlag reflection2;
ReflectionPermission^ reflectionPerm1;
ReflectionPermission^ reflectionPerm2;
ReflectionGenerator^ reflectionGen1 = gcnew ReflectionGenerator;
ReflectionGenerator^ reflectionGen2 = gcnew ReflectionGenerator;
reflectionGen1->ResetIndex();
while ( reflectionGen1->CreateReflection( &reflection1 ) )
{
reflectionPerm1 = gcnew ReflectionPermission( reflection1 );
reflectionGen2->ResetIndex();
Console::WriteLine( "********************************************************\n" );
while ( reflectionGen2->CreateReflection( &reflection2 ) )
{
reflectionPerm2 = gcnew ReflectionPermission( reflection2 );
try
{
if ( reflectionPerm1->IsSubsetOf( reflectionPerm2 ) )
{
Console::WriteLine( "{0} is a subset of {1}", reflectionPerm1->Flags, reflectionPerm2->Flags );
}
else
{
Console::WriteLine( "{0} is not a subset of {1}", reflectionPerm1->Flags, reflectionPerm2->Flags );
}
}
catch ( Exception^ e )
{
Console::WriteLine( "An exception was thrown for subset : {0}\n{1}\n{2}", reflectionPerm1, reflectionPerm2, e );
returnValue = false;
}
}
}
return returnValue;
}
// Union creates a new permission that is the union of the current permission and the specified permission.
bool UnionDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1;
ReflectionPermissionFlag reflection2;
ReflectionPermission^ reflectionPerm1;
ReflectionPermission^ reflectionPerm2;
IPermission^ reflectionPerm3;
ReflectionGenerator^ reflectionGen1 = gcnew ReflectionGenerator;
ReflectionGenerator^ reflectionGen2 = gcnew ReflectionGenerator;
reflectionGen1->ResetIndex();
while ( reflectionGen1->CreateReflection( &reflection1 ) )
{
reflectionPerm1 = gcnew ReflectionPermission( reflection1 );
Console::WriteLine( "**********************************************************\n" );
reflectionGen2->ResetIndex();
while ( reflectionGen2->CreateReflection( &reflection2 ) )
{
reflectionPerm2 = gcnew ReflectionPermission( reflection2 );
reflectionPerm3 = dynamic_cast<ReflectionPermission^>(reflectionPerm1->Union( reflectionPerm2 ));
reflectionPerm3 = reflectionPerm1->Union( reflectionPerm2 );
if ( reflectionPerm3 == nullptr )
{
Console::WriteLine( "The union of {0} and {1} is null.", reflection1, reflection2 );
}
else
{
Console::WriteLine( "The union of {0} and {1} = {2}", reflectionPerm1->Flags, reflectionPerm2->Flags, (dynamic_cast<ReflectionPermission^>(reflectionPerm3))->Flags );
}
}
}
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;
ReflectionPermissionFlag reflection1;
ReflectionPermissionFlag reflection2;
ReflectionPermission^ reflectionPerm1;
ReflectionPermission^ reflectionPerm2;
ReflectionPermission^ reflectionPerm3;
ReflectionGenerator^ reflectionGen1 = gcnew ReflectionGenerator;
ReflectionGenerator^ reflectionGen2 = gcnew ReflectionGenerator;
reflectionGen1->ResetIndex();
while ( reflectionGen1->CreateReflection( &reflection1 ) )
{
reflectionPerm1 = gcnew ReflectionPermission( reflection1 );
Console::WriteLine( "**********************************************************\n" );
reflectionGen2->ResetIndex();
while ( reflectionGen2->CreateReflection( &reflection2 ) )
{
reflectionPerm2 = gcnew ReflectionPermission( reflection2 );
reflectionPerm3 = dynamic_cast<ReflectionPermission^>(reflectionPerm1->Intersect( reflectionPerm2 ));
if ( reflectionPerm3 != nullptr )
{
Console::WriteLine( "The intersection of {0} and {1} = {2}", reflection1, reflection2, (dynamic_cast<ReflectionPermission^>(reflectionPerm3))->Flags );
}
else
{
Console::WriteLine( "The intersection of {0} and {1} is null", reflection1, reflection2 );
}
}
}
return returnValue;
}
//Copy creates and returns an identical copy of the current permission.
bool CopyDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1;
ReflectionPermission^ reflectionPerm1;
ReflectionPermission^ reflectionPerm2;
ReflectionGenerator^ reflectionGen1 = gcnew ReflectionGenerator;
ReflectionGenerator^ reflectionGen2 = gcnew ReflectionGenerator;
reflectionGen1->ResetIndex();
while ( reflectionGen1->CreateReflection( &reflection1 ) )
{
reflectionPerm1 = gcnew ReflectionPermission( reflection1 );
reflectionGen2->ResetIndex();
Console::WriteLine( "********************************************************\n" );
try
{
reflectionPerm2 = dynamic_cast<ReflectionPermission^>(reflectionPerm1->Copy());
Console::WriteLine( "Result of copy = {0}", reflectionPerm2 );
}
catch ( Exception^ e )
{
Console::WriteLine( "Copy failed : {0}{1}", reflectionPerm1, 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.
bool ToFromXmlDemo()
{
bool returnValue = true;
ReflectionPermissionFlag reflection1;
ReflectionPermission^ reflectionPerm1;
ReflectionPermission^ reflectionPerm2;
ReflectionGenerator^ reflectionGen1 = gcnew ReflectionGenerator;
ReflectionGenerator^ reflectionGen2 = gcnew ReflectionGenerator;
reflectionGen1->ResetIndex();
while ( reflectionGen1->CreateReflection( &reflection1 ) )
{
reflectionPerm1 = gcnew ReflectionPermission( reflection1 );
Console::WriteLine( "********************************************************\n" );
reflectionGen2->ResetIndex();
try
{
reflectionPerm2 = gcnew ReflectionPermission( PermissionState::None );
reflectionPerm2->FromXml( reflectionPerm1->ToXml() );
Console::WriteLine( "Result of ToFromXml = {0}", reflectionPerm2 );
}
catch ( Exception^ e )
{
Console::WriteLine( "ToFromXml failed : {0}{1}", reflectionPerm1, e );
continue;
}
}
return returnValue;
}
public:
// Invoke all demos.
bool runDemo()
{
bool returnCode = true;
bool tempReturnCode;
// Call the IsSubsetOf demo.
if ( tempReturnCode = IsSubsetOfDemo() )
Console::WriteLine( "IsSubsetOf demo completed successfully." );
else
Console::WriteLine( "IsSubsetOf demo failed." );
returnCode = tempReturnCode && returnCode;
// Call the Union demo.
if ( tempReturnCode = UnionDemo() )
Console::WriteLine( "Union demo completed successfully." );
else
Console::WriteLine( "Union demo failed." );
returnCode = tempReturnCode && returnCode;
// Call the Intersect demo.
if ( tempReturnCode = IntersectDemo() )
Console::WriteLine( "Intersect demo completed successfully." );
else
Console::WriteLine( "Intersect demo failed." );
returnCode = tempReturnCode && returnCode;
// Call the Copy demo.
if ( tempReturnCode = CopyDemo() )
Console::WriteLine( "Copy demo completed successfully." );
else
Console::WriteLine( "Copy demo failed." );
returnCode = tempReturnCode && returnCode;
// Call the 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
{
ReflectionPermissionDemo^ democase = gcnew ReflectionPermissionDemo;
bool returnCode = democase->runDemo();
if ( returnCode )
{
Console::WriteLine( "ReflectionPermission demo completed successfully." );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 100;
}
else
{
Console::WriteLine( "ReflectionPermission demo failed." );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
catch ( Exception^ e )
{
Console::WriteLine( "ReflectionPermission demo failed." );
Console::WriteLine( e );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
import System.*;
import System.Security.*;
import System.Security.Permissions.*;
/** @assembly CLSCompliant(true)
*/
public class ReflectionPermissionDemo
{
// IsSubsetOf determines whether the current permission is a
// subset of the specified permission.
private boolean IsSubsetOfDemo()
{
boolean returnValue = true;
ReflectionPermissionFlag reflection1[] =
new ReflectionPermissionFlag[1] ;
ReflectionPermissionFlag reflection2[] =
new ReflectionPermissionFlag[1] ;
ReflectionPermission reflectionPerm1[] =
new ReflectionPermission[1] ;
ReflectionPermission reflectionPerm2[] =
new ReflectionPermission[1];
ReflectionGenerator reflectionGen1 =
new ReflectionGenerator();
ReflectionGenerator reflectionGen2 =
new ReflectionGenerator();
reflectionGen1.ResetIndex();
while(reflectionGen1.CreateReflection(reflectionPerm1, reflection1)) {
if (reflectionPerm1[0] == null) {
continue ;
}
reflectionGen2.ResetIndex();
Console.WriteLine("***************************************"
+ "*****************\n");
while(reflectionGen2.CreateReflection(
reflectionPerm2, reflection2)) {
if (reflectionPerm2[0] == null) {
continue ;
}
try {
if ( reflectionPerm1[0].IsSubsetOf(reflectionPerm2[0])) {
Console.WriteLine((reflectionPerm1[0].get_Flags()
+ " is a subset of " +
reflectionPerm2[0].get_Flags()));
}
else {
Console.WriteLine((reflectionPerm1[0].get_Flags()
+ " is not a subset of "
+ reflectionPerm2[0].get_Flags()));
}
}
catch(System.Exception e) {
Console.WriteLine(("An exception was "
+ "thrown for subset :" + reflectionPerm1[0] + "\n"
+ reflectionPerm2[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;
ReflectionPermissionFlag reflection1[] =
new ReflectionPermissionFlag[1];
ReflectionPermissionFlag reflection2[] =
new ReflectionPermissionFlag[1];
ReflectionPermission reflectionPerm1[] =
new ReflectionPermission[1];
ReflectionPermission reflectionPerm2[] =
new ReflectionPermission[1];
IPermission reflectionPerm3;
ReflectionGenerator reflectionGen1 =
new ReflectionGenerator();
ReflectionGenerator reflectionGen2 =
new ReflectionGenerator();
reflectionGen1.ResetIndex();
while(reflectionGen1.CreateReflection(reflectionPerm1, reflection1)) {
if (reflectionPerm1[0] == null) {
continue ;
}
Console.WriteLine("*******************************************"
+ "***************\n");
reflectionGen2.ResetIndex();
while(reflectionGen2.CreateReflection(reflectionPerm2,
reflection2)) {
if (reflectionPerm2[0] == null) {
continue ;
}
reflectionPerm3 =((ReflectionPermission)(
reflectionPerm1[0].Union(reflectionPerm2[0])));
reflectionPerm3 = reflectionPerm1[0].Union(reflectionPerm2[0]);
if (reflectionPerm3 == null) {
Console.WriteLine(("The union of " + reflection1[0]
+ " and " + reflection2[0] + " is null."));
}
else {
Console.WriteLine(("The union of "
+ reflectionPerm1[0].get_Flags() + " and "
+ reflectionPerm2[0].get_Flags() + " = "
+ ((ReflectionPermission)(reflectionPerm3)).
get_Flags().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;
ReflectionPermissionFlag reflection1[] =
new ReflectionPermissionFlag[1];
ReflectionPermissionFlag reflection2[] =
new ReflectionPermissionFlag[1];
ReflectionPermission reflectionPerm1[] =
new ReflectionPermission[1];
ReflectionPermission reflectionPerm2[] =
new ReflectionPermission[1];
ReflectionPermission reflectionPerm3;
ReflectionGenerator reflectionGen1 =
new ReflectionGenerator();
ReflectionGenerator reflectionGen2 =
new ReflectionGenerator();
reflectionGen1.ResetIndex();
while(reflectionGen1.CreateReflection(reflectionPerm1, reflection1)) {
if (reflectionPerm1[0] == null) {
continue ;
}
Console.WriteLine("***************************************"
+ "*******************\n");
reflectionGen2.ResetIndex();
while(reflectionGen2.CreateReflection(reflectionPerm2,
reflection2)) {
if (reflectionPerm2[0] == null) {
continue ;
}
reflectionPerm3 =((ReflectionPermission)(
reflectionPerm1[0].Intersect(reflectionPerm2[0])));
if (reflectionPerm3 != null) {
Console.WriteLine(("The intersection of "
+ reflection1[0] + " and "
+ reflection2[0] + " = "
+ ((ReflectionPermission)(reflectionPerm3)).
get_Flags().ToString()));
}
else {
Console.WriteLine(("The intersection of "
+ reflection1[0] + " and " + reflection2[0]
+ " is null."));
}
}
}
return returnValue ;
} //IntersectDemo
//Copy creates and returns an identical copy of the current permission.
private boolean CopyDemo()
{
boolean returnValue = true;
ReflectionPermissionFlag reflection1[] =
new ReflectionPermissionFlag[1];
ReflectionPermission reflectionPerm1[] =
new ReflectionPermission[1];
ReflectionPermission reflectionPerm2[] =
new ReflectionPermission[1];
ReflectionGenerator reflectionGen1 =
new ReflectionGenerator();
ReflectionGenerator reflectionGen2 =
new ReflectionGenerator();
reflectionGen1.ResetIndex();
while(reflectionGen1.CreateReflection(reflectionPerm1, reflection1)) {
if (reflectionPerm1[0] == null) {
continue ;
}
reflectionGen2.ResetIndex();
Console.WriteLine("*********************************"
+ "***********************\n");
try {
reflectionPerm2[0] =((ReflectionPermission)(
reflectionPerm1[0].Copy()));
Console.WriteLine(("Result of copy = "
+ reflectionPerm2[0].ToString()));
}
catch(System.Exception e){
Console.WriteLine(("Copy failed :"
+ reflectionPerm1[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;
ReflectionPermissionFlag reflection1[] =
new ReflectionPermissionFlag[1];
ReflectionPermission reflectionPerm1[] =
new ReflectionPermission[1];
ReflectionPermission reflectionPerm2[] =
new ReflectionPermission[1];
ReflectionGenerator reflectionGen1 =
new ReflectionGenerator();
ReflectionGenerator reflectionGen2 =
new ReflectionGenerator();
reflectionGen1.ResetIndex();
while(reflectionGen1.CreateReflection(reflectionPerm1, reflection1)) {
if (reflectionPerm1[0] == null) {
continue ;
}
Console.WriteLine("**************************************"
+ "******************\n");
reflectionGen2.ResetIndex();
try {
reflectionPerm2[0] =
new ReflectionPermission(PermissionState.None);
reflectionPerm2[0].FromXml(reflectionPerm1[0].ToXml());
Console.WriteLine(("Result of ToFromXml = "
+ reflectionPerm2[0].ToString()));
}
catch(System.Exception e) {
Console.WriteLine(("ToFromXml failed :"
+ reflectionPerm1[0].ToString() + e));
continue ;
}
}
return returnValue ;
} //ToFromXmlDemo
// Invoke all demos.
public boolean runDemo()
{
boolean returnCode = true;
boolean tempReturnCode;
// Call the 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 the 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 the 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 the 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 the 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 {
ReflectionPermissionDemo democase =
new ReflectionPermissionDemo();
boolean returnCode = democase.runDemo();
if (returnCode) {
Console.get_Out().WriteLine("ReflectionPermission "
+ "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(
"ReflectionPermission 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("ReflectionPermission demo 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
} //ReflectionPermissionDemo
// This class generates ReflectionPermission objects.
class ReflectionGenerator
{
private ReflectionPermissionFlag myReflection[] = {
ReflectionPermissionFlag.AllFlags,
ReflectionPermissionFlag.MemberAccess,
ReflectionPermissionFlag.NoFlags,
ReflectionPermissionFlag.ReflectionEmit,
ReflectionPermissionFlag.TypeInformation};
private int reflectionIndex = 0;
public ReflectionGenerator()
{
ResetIndex();
} //ReflectionGenerator
public void ResetIndex()
{
reflectionIndex = 0;
} //ResetIndex
// CreateReflection creates a ReflectionPermission object.
public boolean CreateReflection(ReflectionPermission reflectionPerm[],
ReflectionPermissionFlag reflection[])
{
if (reflectionIndex >= myReflection.length) {
reflectionPerm[0] = new ReflectionPermission(PermissionState.None);
reflection[0] = ReflectionPermissionFlag.NoFlags;
reflectionIndex++;
return false ;
}
reflection[0] = myReflection[reflectionIndex ++];
try {
reflectionPerm[0] = new ReflectionPermission(reflection[0]);
return true ;
}
catch(System.Exception e){
Console.WriteLine(("Cannot create ReflectionPermission: "
+ reflection[0] + " " + e));
reflectionPerm[0] = new ReflectionPermission(PermissionState.None);
reflection[0] = ReflectionPermissionFlag.NoFlags;
return true ;
}
} //CreateReflection
} //ReflectionGenerator
Vererbungshierarchie
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.ReflectionPermission
Threadsicherheit
Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
Plattformen
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
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
Siehe auch
Referenz
ReflectionPermission-Member
System.Security.Permissions-Namespace
ReflectionPermissionAttribute
ReflectionPermissionFlag