
ReflectionPermission Class
Controls access to metadata through the System.Reflection APIs. This class cannot be inherited.
For a list of all members of this type, see ReflectionPermission Members.
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.ReflectionPermission
[Visual Basic] <Serializable> NotInheritable Public Class ReflectionPermission Inherits CodeAccessPermission Implements IUnrestrictedPermission [C#] [Serializable] public sealed class ReflectionPermission : CodeAccessPermission, IUnrestrictedPermission [C++] [Serializable] public __gc __sealed class ReflectionPermission : public CodeAccessPermission, IUnrestrictedPermission [JScript] public Serializable class ReflectionPermission extends CodeAccessPermission implements IUnrestrictedPermission
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
Type is the root of the System.Reflection functionality. Without ReflectionPermission, code can only access the public members of loaded assemblies. This includes, but is not limited to, unrestricted access to Object.GetType, access to public exported types through Type.GetType, and access to GetTypeFromHandle. Some properties of Type, such as FullName and Attributes, are accessible without ReflectionPermission.
Code with the appropriate ReflectionPermission has access to the public, protected, and even private members of any loaded Type. This includes access to Module, Assembly, BaseType, and GetInterfaces.
CAUTION Because ReflectionPermission can provide access to private class members and metadata, it is recommended that ReflectionPermission not be granted to Internet code.
Example
[Visual Basic] ' This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods ' of the ReflectionPermission class. 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(reflectionPerm1, reflection1) If reflectionPerm1 Is Nothing Then GoTo ContinueWhile1 End If reflectionGen2.ResetIndex() Console.WriteLine("********************************************************" & ControlChars.Lf) While reflectionGen2.CreateReflection(reflectionPerm2, reflection2) If reflectionPerm2 Is Nothing Then GoTo ContinueWhile2 End If 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(reflectionPerm1, reflection1) If reflectionPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Lf) reflectionGen2.ResetIndex() While reflectionGen2.CreateReflection(reflectionPerm2, reflection2) If reflectionPerm2 Is Nothing Then GoTo ContinueWhile2 End If 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(reflectionPerm1, reflection1) If reflectionPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Lf) reflectionGen2.ResetIndex() While reflectionGen2.CreateReflection(reflectionPerm2, reflection2) If reflectionPerm2 Is Nothing Then GoTo ContinueWhile2 End If 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(reflectionPerm1, reflection1) If reflectionPerm1 Is Nothing Then GoTo ContinueWhile1 End If 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())) 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 reflection1 As ReflectionPermissionFlag Dim reflectionPerm1, reflectionPerm2 As ReflectionPermission Dim reflectionGen1 As New ReflectionGenerator() Dim reflectionGen2 As New ReflectionGenerator() reflectionGen1.ResetIndex() While reflectionGen1.CreateReflection(reflectionPerm1, reflection1) If reflectionPerm1 Is Nothing Then GoTo ContinueWhile1 End If 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())) 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 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 reflectionPerm As ReflectionPermission, ByRef reflection As ReflectionPermissionFlag) As Boolean If reflectionIndex >= myReflection.Length Then reflectionPerm = New ReflectionPermission(PermissionState.None) reflection = ReflectionPermissionFlag.NoFlags reflectionIndex &= 1 Return False End If reflection = myReflection(reflectionIndex) reflectionIndex = reflectionIndex + 1 Try reflectionPerm = New ReflectionPermission(reflection) Return True Catch e As Exception Console.WriteLine(("Cannot create ReflectionPermission: " & reflection & " " & e.ToString())) reflectionPerm = New ReflectionPermission(PermissionState.None) reflection = ReflectionPermissionFlag.NoFlags Return True End Try End Function 'CreateReflection ' End of ReflectionGenerator. [C#] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the ReflectionPermission 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 reflectionPerm1, out reflection1)) { if(reflectionPerm1 == null) continue; reflectionGen2.ResetIndex(); Console.WriteLine("********************************************************\n"); while(reflectionGen2.CreateReflection(out reflectionPerm2, out reflection2)) { if(reflectionPerm2 == null) continue; 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 reflectionPerm1, out reflection1)) { if(reflectionPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); reflectionGen2.ResetIndex(); while(reflectionGen2.CreateReflection(out reflectionPerm2, out reflection2)) { if(reflectionPerm2 == null) continue; 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 reflectionPerm1, out reflection1)) { if(reflectionPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); reflectionGen2.ResetIndex(); while(reflectionGen2.CreateReflection(out reflectionPerm2, out reflection2)) { if(reflectionPerm2 == null) continue; 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 reflectionPerm1, out reflection1)) { if(reflectionPerm1 == null) continue; 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 reflectionPerm1, out reflection1)) { if(reflectionPerm1 == null) continue; 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 ReflectionPermission reflectionPerm, out ReflectionPermissionFlag reflection) { if(reflectionIndex >= myReflection.Length) { reflectionPerm = new ReflectionPermission(PermissionState.None); reflection=ReflectionPermissionFlag.NoFlags; reflectionIndex++; return false; } reflection = myReflection[reflectionIndex++]; try { reflectionPerm = new ReflectionPermission(reflection); return true; } catch(Exception e) { Console.WriteLine("Cannot create ReflectionPermission: " + reflection +" "+e); reflectionPerm = new ReflectionPermission(PermissionState.None); reflection=ReflectionPermissionFlag.NoFlags; return true; } } } // End of ReflectionGenerator. [C++] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the ReflectionPermission class. #using <mscorlib.dll> using namespace System; using namespace System::Security; using namespace System::Security::Permissions; using namespace System::Runtime::InteropServices; [assembly:CLSCompliant(true)]; // This class generates ReflectionPermission objects. private __gc class ReflectionGenerator { private: ReflectionPermissionFlag myReflection[]; int reflectionIndex; public: ReflectionGenerator() { ReflectionPermissionFlag temp0 [] = { ReflectionPermissionFlag::AllFlags, ReflectionPermissionFlag::MemberAccess, ReflectionPermissionFlag::NoFlags, ReflectionPermissionFlag::ReflectionEmit, ReflectionPermissionFlag::TypeInformation}; myReflection = temp0; ResetIndex(); } public: void ResetIndex() { reflectionIndex = 0; } // CreateReflection creates a ReflectionPermission object. public: bool CreateReflection([Out]ReflectionPermission** reflectionPerm, [Out] ReflectionPermissionFlag* reflection) { if (reflectionIndex >= myReflection->Length) { *reflectionPerm = new ReflectionPermission(PermissionState::None); *reflection=ReflectionPermissionFlag::NoFlags; reflectionIndex++; return false; } *reflection = myReflection[reflectionIndex++]; try { *reflectionPerm = new ReflectionPermission(*reflection); return true; } catch (Exception* e) { Console::WriteLine(S"Cannot create ReflectionPermission: {0} {1}", __box(*reflection), e); *reflectionPerm = new ReflectionPermission(PermissionState::None); *reflection=ReflectionPermissionFlag::NoFlags; return true; } } }; // End of ReflectionGenerator. public __gc 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(&reflectionPerm1, &reflection1)) { if (reflectionPerm1 == 0) continue; reflectionGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); while(reflectionGen2->CreateReflection(&reflectionPerm2, &reflection2)) { if (reflectionPerm2 == 0) continue; try { if (reflectionPerm1->IsSubsetOf(reflectionPerm2)) { Console::WriteLine(S"{0} is a subset of {1}", __box(reflectionPerm1->Flags), __box(reflectionPerm2->Flags)); } else { Console::WriteLine(S"{0} is not a subset of {1}", __box(reflectionPerm1->Flags), __box(reflectionPerm2->Flags)); } } catch (Exception* e) { Console::WriteLine(S"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. 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(&reflectionPerm1, &reflection1)) { if (reflectionPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); reflectionGen2->ResetIndex(); while(reflectionGen2->CreateReflection(&reflectionPerm2, &reflection2)) { if (reflectionPerm2 == 0) continue; reflectionPerm3 = dynamic_cast<ReflectionPermission*>(reflectionPerm1->Union(reflectionPerm2)); reflectionPerm3 = reflectionPerm1->Union(reflectionPerm2); if (reflectionPerm3 == 0) { Console::WriteLine(S"The union of {0} and {1} is null.", __box(reflection1), __box(reflection2)); } else { Console::WriteLine(S"The union of {0} and {1} = {2}", __box(reflectionPerm1->Flags), __box(reflectionPerm2->Flags), __box((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. 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(&reflectionPerm1, &reflection1)) { if (reflectionPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); reflectionGen2->ResetIndex(); while(reflectionGen2->CreateReflection(&reflectionPerm2, &reflection2)) { if (reflectionPerm2 == 0) continue; reflectionPerm3 = dynamic_cast<ReflectionPermission*>(reflectionPerm1->Intersect(reflectionPerm2)); if (reflectionPerm3 != 0) { Console::WriteLine(S"The intersection of {0} and {1} = {2}", __box(reflection1), __box(reflection2), __box((dynamic_cast<ReflectionPermission*>(reflectionPerm3))->Flags)); } else { Console::WriteLine(S"The intersection of {0} and {1} is null", __box(reflection1), __box(reflection2)); } } } 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(&reflectionPerm1, &reflection1)) { if (reflectionPerm1 == 0) continue; reflectionGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); try { reflectionPerm2 = dynamic_cast<ReflectionPermission*>(reflectionPerm1->Copy()); Console::WriteLine(S"Result of copy = {0}", reflectionPerm2); } catch (Exception* e) { Console::WriteLine(S"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. private: bool ToFromXmlDemo() { bool returnValue = true; ReflectionPermissionFlag reflection1; ReflectionPermission* reflectionPerm1, *reflectionPerm2; ReflectionGenerator* reflectionGen1 = new ReflectionGenerator(); ReflectionGenerator* reflectionGen2 = new ReflectionGenerator(); reflectionGen1->ResetIndex(); while(reflectionGen1->CreateReflection(&reflectionPerm1, &reflection1)) { if (reflectionPerm1 == 0) continue; Console::WriteLine(S"********************************************************\n"); reflectionGen2->ResetIndex(); try { reflectionPerm2 = new ReflectionPermission(PermissionState::None); reflectionPerm2->FromXml(reflectionPerm1->ToXml()); Console::WriteLine(S"Result of ToFromXml = {0}", reflectionPerm2); } catch (Exception* e) { Console::WriteLine(S"ToFromXml failed : {0}{1}", reflectionPerm1, e); continue; } } return returnValue; } // Invoke all demos. public: bool runDemo() { bool returnCode = true; bool tempReturnCode; // Call the IsSubsetOf demo. if (tempReturnCode= IsSubsetOfDemo())Console::WriteLine(S"IsSubsetOf demo completed successfully."); else Console::WriteLine(S"IsSubsetOf demo failed."); returnCode=tempReturnCode && returnCode; // Call the Union demo. if (tempReturnCode= UnionDemo())Console::WriteLine(S"Union demo completed successfully."); else Console::WriteLine(S"Union demo failed."); returnCode=tempReturnCode && returnCode; // Call the Intersect demo. if (tempReturnCode= IntersectDemo())Console::WriteLine(S"Intersect demo completed successfully."); else Console::WriteLine(S"Intersect demo failed."); returnCode=tempReturnCode && returnCode; // Call the Copy demo. if (tempReturnCode= CopyDemo())Console::WriteLine(S"Copy demo completed successfully."); else Console::WriteLine(S"Copy demo failed."); returnCode=tempReturnCode && returnCode; // Call the 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 { ReflectionPermissionDemo* democase = new ReflectionPermissionDemo(); bool returnCode = democase->runDemo(); if (returnCode) { Console::WriteLine(S"ReflectionPermission demo completed successfully."); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 100; } else { Console::WriteLine(S"ReflectionPermission demo failed."); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 101; } } catch (Exception* e) { Console::WriteLine(S"ReflectionPermission demo failed."); Console::WriteLine(e); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 101; } }
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button in the upper-left corner of the page.
Requirements
Namespace: System.Security.Permissions
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: Mscorlib (in Mscorlib.dll)
See Also
ReflectionPermission Members | System.Security.Permissions Namespace | Permissions | Requesting Permissions | ReflectionPermissionAttribute | ReflectionPermissionFlag