ZoneIdentityPermission 类
为代码源自的区域定义标识权限。无法继承此类。
**命名空间:**System.Security.Permissions
**程序集:**mscorlib（在 mscorlib.dll 中）
语法
声明
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class ZoneIdentityPermission
Inherits CodeAccessPermission
用法
Dim instance As ZoneIdentityPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class ZoneIdentityPermission : CodeAccessPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public ref class ZoneIdentityPermission sealed : public CodeAccessPermission
/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public final class ZoneIdentityPermission extends CodeAccessPermission
SerializableAttribute
ComVisibleAttribute(true)
public final class ZoneIdentityPermission extends CodeAccessPermission
备注
该权限可以确定调用代码是否来自某特定区域。区域根据 Microsoft Internet Explorer 选项配置，并由 Internet Explorer 的 IInternetSecurityManager 和相关的 API 从 URL 进行映射。只能为权限定义精确的区域匹配；一个 URL 只能属于一个区域。
“本地 Intranet”区域：“本地 Intranet”区域用于公司的 Intranet 上的内容。因为服务器位于公司的防火墙内，所以 Intranet 上的内容会被分配较高的信任级别。
“受信任站点”区域：“受信任站点”区域用于具有如下特点的网站上的内容，这些网站比 Internet 上的其他站点更可信或更值得信赖。用户可以使用此区域向特定 Internet 站点分配较高的信任级别。这些受信任的网站的 URL 需要由用户映射到该区域中。默认情况下，“受信任站点”区域中的站点并不会比“Internet”区域中的站点受到更高信任。如果用户或公司想给予该区域所包含站点更高级别的信任，则需要更改授予该区域的信任级别。
“Internet”区域：对于不属于另一区域的 Internet 上的网站，使用“Internet”区域。默认设置使从这些站点下载的代码对用户计算机上的资源只有最低限度的访问权限。未映射到其他区域的网站自动归入此区域。
“受限站点”区域：“受限站点”区域用于具有如下特点的网站，这些网站包含在下载时可能导致问题或者可能以前已经导致问题的内容。该区域可用于防止在用户的计算机上运行从这些站点下载的代码。这些不受信任的网站的 URL 需要由用户映射到该区域中。
“本地计算机”区域：“本地计算机”区域是隐式区域，用于存在于用户的计算机上的内容。除本地系统上由 Internet Explorer 缓存的内容外，在用户计算机上找到的内容均被高度信任。
提示
在 .NET Framework 1.0 和 1.1 版中，标识权限不能具有 Unrestricted 权限状态值。在 .NET Framework 2.0 版中，标识权限可以具有任何权限状态值。这表明在 2.0 版中，标识权限与实现 IUnrestrictedPermission 接口的权限具有相同的行为。有关用 1.1 版 CAS 策略执行 2.0 版应用程序的信息，请参见 <legacyV1CASPolicy> 元素。
示例
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic
Module Module1
Public Class ZoneIdentityDemo
' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Function IsSubsetOfDemo() As Boolean
Dim returnValue As Boolean = True
Dim zone1, zone2 As SecurityZone
Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission
Dim zoneGen1 As New zoneGenerator()
Dim zoneGen2 As New zoneGenerator()
zoneGen1.ResetIndex()
While zoneGen1.CreateZone(zone1)
zoneIdPerm1 = New ZoneIdentityPermission(zone1)
zoneGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Cr)
While zoneGen2.CreateZone(zone2)
zoneIdPerm2 = New ZoneIdentityPermission(zone2)
Try
If zoneIdPerm1.IsSubsetOf(zoneIdPerm2) Then
Console.WriteLine((zoneIdPerm1.SecurityZone.ToString() & _
" is a subset of " & zoneIdPerm2.SecurityZone.ToString()))
Else
Console.WriteLine((zoneIdPerm1.SecurityZone.ToString() & _
" is not a subset of " & zoneIdPerm2.SecurityZone.ToString()))
End If
Catch e As Exception
Console.WriteLine(("An exception was thrown for subset :" & _
zoneIdPerm1.ToString() & ControlChars.Cr & zoneIdPerm2.ToString() & _
ControlChars.Cr & 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 zone1, zone2 As SecurityZone
Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission
Dim zoneIdPerm3 As IPermission
Dim zoneGen1 As New ZoneGenerator()
Dim zoneGen2 As New ZoneGenerator()
zoneGen1.ResetIndex()
While zoneGen1.CreateZone(zone1)
zoneIdPerm1 = New ZoneIdentityPermission(zone1)
Console.WriteLine("**********************************************************" & ControlChars.Cr)
zoneGen2.ResetIndex()
Try
While zoneGen2.CreateZone(zone2)
zoneIdPerm2 = New ZoneIdentityPermission(zone2)
zoneIdPerm3 = CType(zoneIdPerm1.Union(zoneIdPerm2), ZoneIdentityPermission)
zoneIdPerm3 = zoneIdPerm1.Union(zoneIdPerm2)
If zoneIdPerm3 Is Nothing Then
Console.WriteLine(("The union of " & zone1.ToString() & " and " & _
zone2.ToString() & " is null."))
Else
Console.WriteLine(("The union of " & zoneIdPerm1.SecurityZone.ToString() & " and " _
& zoneIdPerm2.SecurityZone.ToString() & " = " _
& CType(zoneIdPerm3, Object).SecurityZone.ToString()))
End If
ContinueWhile2:
End While
Catch e As Exception
Console.WriteLine(e.Message)
End Try
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 zone1, zone2 As SecurityZone
Dim zoneIdPerm1, zoneIdPerm2, zoneIdPerm3 As ZoneIdentityPermission
Dim zoneGen1 As New ZoneGenerator()
Dim zoneGen2 As New ZoneGenerator()
zoneGen1.ResetIndex()
While zoneGen1.CreateZone(zone1)
zoneIdPerm1 = New ZoneIdentityPermission(zone1)
Console.WriteLine("**********************************************************" & ControlChars.Cr)
zoneGen2.ResetIndex()
While zoneGen2.CreateZone(zone2)
zoneIdPerm2 = New ZoneIdentityPermission(zone2)
zoneIdPerm3 = CType(zoneIdPerm1.Intersect(zoneIdPerm2), ZoneIdentityPermission)
If Not (zoneIdPerm3 Is Nothing) Then
Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _
zone2.ToString() & " = " & CType(zoneIdPerm3, Object).SecurityZone.ToString()))
Else
Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _
zone2.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 zone1 As SecurityZone
Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission
Dim zoneGen1 As New ZoneGenerator()
Dim zoneGen2 As New ZoneGenerator()
zoneGen1.ResetIndex()
While zoneGen1.CreateZone(zone1)
zoneIdPerm1 = New ZoneIdentityPermission(zone1)
zoneGen2.ResetIndex()
Console.WriteLine("********************************************************" & ControlChars.Cr)
Try
zoneIdPerm2 = CType(zoneIdPerm1.Copy(), ZoneIdentityPermission)
Console.WriteLine(("Result of copy = " & zoneIdPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("Copy failed :" & zoneIdPerm1.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 zone1 As SecurityZone
Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission
Dim zoneGen1 As New ZoneGenerator()
Dim zoneGen2 As New ZoneGenerator()
zoneGen1.ResetIndex()
While zoneGen1.CreateZone(zone1)
zoneIdPerm1 = New ZoneIdentityPermission(zone1)
Console.WriteLine("********************************************************" & ControlChars.Cr)
zoneGen2.ResetIndex()
Try
zoneIdPerm2 = New ZoneIdentityPermission(PermissionState.None)
zoneIdPerm2.FromXml(zoneIdPerm1.ToXml())
Console.WriteLine(("Result of ToFromXml = " & zoneIdPerm2.ToString()))
Catch e As Exception
Console.WriteLine(("ToFromXml failed :" & zoneIdPerm1.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.
If IsSubsetOfDemo() Then
Console.Out.WriteLine("IsSubsetOf demo completed successfully.")
tempReturnCode = True
Else
Console.Out.WriteLine("IsSubsetOf demo failed.")
tempReturnCode = False
End If
returnCode = tempReturnCode And returnCode
' Call the Union demo.
If UnionDemo() Then
Console.Out.WriteLine("Union demo completed successfully.")
tempReturnCode = True
Else
Console.Out.WriteLine("Union demo failed.")
tempReturnCode = False
End If
returnCode = tempReturnCode And returnCode
' Call the Intersect demo.
If IntersectDemo() Then
Console.Out.WriteLine("Intersect demo completed successfully.")
tempReturnCode = True
Else
Console.Out.WriteLine("Intersect demo failed.")
tempReturnCode = False
End If
returnCode = tempReturnCode And returnCode
' Call the Copy demo.
If CopyDemo() Then
Console.Out.WriteLine("Copy demo completed successfully.")
tempReturnCode = True
Else
Console.Out.WriteLine("Copy demo failed.")
tempReturnCode = False
End If
returnCode = tempReturnCode And returnCode
' Call the ToFromXml demo.
If ToFromXmlDemo() Then
Console.Out.WriteLine("ToFromXml demo completed successfully.")
tempReturnCode = True
Else
Console.Out.WriteLine("ToFromXml demo failed.")
tempReturnCode = False
End If
returnCode = tempReturnCode And returnCode
Return returnCode
End Function
' Test harness.
Public Overloads Shared Sub Main(ByVal args() As [String])
Try
Dim democase As New ZoneIdentityDemo()
Dim returnCode As Boolean = democase.RunDemo()
If returnCode Then
Console.Out.WriteLine("ZoneIdentityPermission 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("ZoneIdentityPermission 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("ZoneIdentityPermission 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 'ZoneIdentityDemo
_
' This class generates ZoneIdentityPermission objects.
Friend Class ZoneGenerator
Private myZone As SecurityZone() = {SecurityZone.NoZone, _
SecurityZone.Internet, _
SecurityZone.Intranet, _
SecurityZone.MyComputer, _
SecurityZone.Untrusted, _
SecurityZone.Trusted}
Private zoneIndex As Integer = 0
Public Sub New()
ResetIndex()
End Sub 'New
Public Sub ResetIndex()
zoneIndex = 0
End Sub 'ResetIndex
' CreateZone creates ZoneIdentityPermission objects.
Public Function CreateZone(ByRef zone As SecurityZone) As Boolean
If zoneIndex >= myZone.Length Then
zone = SecurityZone.NoZone
zoneIndex = zoneIndex + 1
Return False
End If
zone = myZone(zoneIndex)
zoneIndex = zoneIndex + 1
Return True
End Function 'CreateZone
' End of ZoneGenerator.
End Module
using System;
using System.Security;
using System.Security.Permissions;
public class ZoneIdentityDemo
{
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
private bool IsSubsetOfDemo()
{
bool returnValue = true;
SecurityZone zone1, zone2;
ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(out zone1))
{
zoneIdPerm1 = new ZoneIdentityPermission( zone1);
zoneGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while (zoneGen2.CreateZone(out zone2))
{
zoneIdPerm2 = new ZoneIdentityPermission( zone2);
try
{
if (zoneIdPerm1.IsSubsetOf(zoneIdPerm2))
{
Console.WriteLine(zoneIdPerm1.SecurityZone + " is a subset of " +
zoneIdPerm2.SecurityZone);
}
else
{
Console.WriteLine(zoneIdPerm1.SecurityZone + " is not a subset of " +
zoneIdPerm2.SecurityZone);
}
}
catch (Exception e)
{
Console.WriteLine("An exception was thrown for subset :" + zoneIdPerm1 + "\n" +
zoneIdPerm2 + "\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;
SecurityZone zone1, zone2;
ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2;
IPermission zoneIdPerm3;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(out zone1))
{
zoneIdPerm1 = new ZoneIdentityPermission( zone1);
Console.WriteLine("**********************************************************\n");
zoneGen2.ResetIndex();
while (zoneGen2.CreateZone(out zone2))
{
zoneIdPerm2 = new ZoneIdentityPermission( zone2);
try
{
zoneIdPerm3 = (ZoneIdentityPermission)zoneIdPerm1.Union(zoneIdPerm2);
zoneIdPerm3 = zoneIdPerm1.Union(zoneIdPerm2);
if (zoneIdPerm3 == null)
{
Console.WriteLine("The union of " + zone1 + " and " + zone2 + " is null.");
}
else
{
Console.WriteLine("The union of " + zoneIdPerm1.SecurityZone + " and " +
zoneIdPerm2.SecurityZone + " = " +
((ZoneIdentityPermission)zoneIdPerm3).SecurityZone.ToString());
}
}
catch (Exception e)
{
// Expected exception.
Console.WriteLine("An exception was thrown for union :" + e.Message);
}
}
}
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;
SecurityZone zone1, zone2;
ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2, zoneIdPerm3;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(out zone1))
{
zoneIdPerm1 = new ZoneIdentityPermission( zone1);
Console.WriteLine("**********************************************************\n");
zoneGen2.ResetIndex();
while (zoneGen2.CreateZone(out zone2))
{
zoneIdPerm2 = new ZoneIdentityPermission( zone2);
zoneIdPerm3 = (ZoneIdentityPermission)zoneIdPerm1.Intersect(zoneIdPerm2);
if (zoneIdPerm3 != null)
{
Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " = " +
((ZoneIdentityPermission)zoneIdPerm3).SecurityZone.ToString());
}
else
{
Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " is null.");
}
}
}
return returnValue;
}
//Copy creates and returns an identical copy of the current permission.
private bool CopyDemo()
{
bool returnValue = true;
SecurityZone zone1;
ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(out zone1))
{
zoneIdPerm1 = new ZoneIdentityPermission( zone1);
zoneGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
try
{
zoneIdPerm2 = (ZoneIdentityPermission)zoneIdPerm1.Copy();
Console.WriteLine("Result of copy = " + zoneIdPerm2.ToString());
}
catch (Exception e)
{
Console.WriteLine("Copy failed :" + zoneIdPerm1.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;
SecurityZone zone1;
ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(out zone1))
{
zoneIdPerm1 = new ZoneIdentityPermission( zone1);
Console.WriteLine("********************************************************\n");
zoneGen2.ResetIndex();
try
{
zoneIdPerm2 = new ZoneIdentityPermission(PermissionState.None);
zoneIdPerm2.FromXml(zoneIdPerm1.ToXml());
Console.WriteLine("Result of ToFromXml = " +
zoneIdPerm2.ToString());
}
catch (Exception e)
{
Console.WriteLine("ToFromXml failed :" + zoneIdPerm1.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
{
ZoneIdentityDemo democase = new ZoneIdentityDemo();
bool returnCode = democase.RunDemo();
if (returnCode)
{
Console.Out.WriteLine("ZoneIdentityPermission demo completed successfully.");
Console.Out.WriteLine("Press the Enter key to exit.");
string consoleInput = Console.ReadLine();
System.Environment.ExitCode = 100;
}
else
{
Console.Out.WriteLine("ZoneIdentityPermission 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("ZoneIdentityPermission 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 ZoneIdentityPermission objects.
internal class ZoneGenerator
{
private SecurityZone[] myZone =
{ SecurityZone.NoZone, SecurityZone.Internet, SecurityZone.Intranet, SecurityZone.MyComputer, SecurityZone.Untrusted, SecurityZone.Trusted };
private int zoneIndex = 0;
public ZoneGenerator()
{
ResetIndex();
}
public void ResetIndex()
{
zoneIndex = 0;
}
// CreateZone creates ZoneIdentityPermission objects.
public bool CreateZone(out SecurityZone zone)
{
if (zoneIndex >= myZone.Length)
{
zone = SecurityZone.NoZone;
zoneIndex++;
return false;
}
zone = myZone[zoneIndex++];
return true;
}
} // End of ZoneGenerator.
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Runtime::InteropServices;
// This class generates ZoneIdentityPermission objects.
[assembly:CLSCompliant(true)];
ref class ZoneGenerator
{
private:
array<SecurityZone>^myZone;
int zoneIndex;
public:
ZoneGenerator()
{
array<SecurityZone>^ temp = {SecurityZone::NoZone,SecurityZone::Internet,SecurityZone::Intranet,SecurityZone::MyComputer,SecurityZone::Untrusted,SecurityZone::Trusted};
myZone = temp;
ResetIndex();
}
void ResetIndex()
{
zoneIndex = 0;
}
// CreateZone creates ZoneIdentityPermission objects.
bool CreateZone( [Out]SecurityZone * zone )
{
if ( zoneIndex >= myZone->Length )
{
*zone = SecurityZone::NoZone;
zoneIndex++;
return false;
}
*zone = myZone[ zoneIndex++ ];
return true;
}
};
// End of ZoneGenerator.
public ref class ZoneIdentityDemo
{
private:
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
bool IsSubsetOfDemo()
{
bool returnValue = true;
SecurityZone zone1;
SecurityZone zone2;
ZoneIdentityPermission^ zoneIdPerm1;
ZoneIdentityPermission^ zoneIdPerm2;
ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator;
ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator;
zoneGen1->ResetIndex();
while ( zoneGen1->CreateZone( &zone1 ) )
{
zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 );
zoneGen2->ResetIndex();
Console::WriteLine( "********************************************************\n" );
while ( zoneGen2->CreateZone( &zone2 ) )
{
zoneIdPerm2 = gcnew ZoneIdentityPermission( zone2 );
try
{
if ( zoneIdPerm1->IsSubsetOf( zoneIdPerm2 ) )
{
Console::WriteLine( "{0} is a subset of {1}", zoneIdPerm1->SecurityZone, zoneIdPerm2->SecurityZone );
}
else
{
Console::WriteLine( "{0} is not a subset of {1}", zoneIdPerm1->SecurityZone, zoneIdPerm2->SecurityZone );
}
}
catch ( Exception^ e )
{
Console::WriteLine( "An exception was thrown for subset : {0}\n{1}\n{2}", zoneIdPerm1, zoneIdPerm2, 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;
SecurityZone zone1;
SecurityZone zone2;
ZoneIdentityPermission^ zoneIdPerm1;
ZoneIdentityPermission^ zoneIdPerm2;
IPermission^ zoneIdPerm3;
ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator;
ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator;
zoneGen1->ResetIndex();
while ( zoneGen1->CreateZone( &zone1 ) )
{
zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 );
Console::WriteLine( "**********************************************************\n" );
zoneGen2->ResetIndex();
while ( zoneGen2->CreateZone( &zone2 ) )
{
zoneIdPerm2 = gcnew ZoneIdentityPermission( zone2 );
zoneIdPerm3 = zoneIdPerm1->Union( zoneIdPerm2 );
if ( zoneIdPerm3 == nullptr )
{
Console::WriteLine( "The union of {0} and {1} is null.", zone1, zone2 );
}
else
{
Console::WriteLine( "The union of {0} and {1} = {2}", zoneIdPerm1->SecurityZone, zoneIdPerm2->SecurityZone, (dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm3))->SecurityZone );
}
}
}
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;
SecurityZone zone1;
SecurityZone zone2;
ZoneIdentityPermission^ zoneIdPerm1;
ZoneIdentityPermission^ zoneIdPerm2;
ZoneIdentityPermission^ zoneIdPerm3;
ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator;
ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator;
zoneGen1->ResetIndex();
while ( zoneGen1->CreateZone( &zone1 ) )
{
zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 );
Console::WriteLine( "**********************************************************\n" );
zoneGen2->ResetIndex();
while ( zoneGen2->CreateZone( &zone2 ) )
{
zoneIdPerm2 = gcnew ZoneIdentityPermission( zone2 );
zoneIdPerm3 = dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm1->Intersect( zoneIdPerm2 ));
if ( zoneIdPerm3 != nullptr )
{
Console::WriteLine( "The intersection of {0} and {1} = {2}", zone1, zone2, (dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm3))->SecurityZone );
}
else
{
Console::WriteLine( "The intersection of {0} and {1} is null.", zone1, zone2 );
}
}
}
return returnValue;
}
//Copy creates and returns an identical copy of the current permission.
bool CopyDemo()
{
bool returnValue = true;
SecurityZone zone1;
ZoneIdentityPermission^ zoneIdPerm1;
ZoneIdentityPermission^ zoneIdPerm2;
ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator;
ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator;
zoneGen1->ResetIndex();
while ( zoneGen1->CreateZone( &zone1 ) )
{
zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 );
zoneGen2->ResetIndex();
Console::WriteLine( "********************************************************\n" );
try
{
zoneIdPerm2 = dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm1->Copy());
Console::WriteLine( "Result of copy = {0}", zoneIdPerm2 );
}
catch ( Exception^ e )
{
Console::WriteLine( "Copy failed : {0}{1}", zoneIdPerm1, 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;
SecurityZone zone1;
ZoneIdentityPermission^ zoneIdPerm1;
ZoneIdentityPermission^ zoneIdPerm2;
ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator;
ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator;
zoneGen1->ResetIndex();
while ( zoneGen1->CreateZone( &zone1 ) )
{
zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 );
Console::WriteLine( "********************************************************\n" );
zoneGen2->ResetIndex();
try
{
zoneIdPerm2 = gcnew ZoneIdentityPermission( PermissionState::None );
zoneIdPerm2->FromXml( zoneIdPerm1->ToXml() );
Console::WriteLine( "Result of ToFromXml = {0}", zoneIdPerm2 );
}
catch ( Exception^ e )
{
Console::WriteLine( "ToFromXml failed : {0}{1}", zoneIdPerm1, 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
{
ZoneIdentityDemo^ democase = gcnew ZoneIdentityDemo;
bool returnCode = democase->RunDemo();
if ( returnCode )
{
Console::WriteLine( "ZoneIdentityPermission demo completed successfully." );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 100;
}
else
{
Console::WriteLine( "ZoneIdentityPermission demo failed." );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
catch ( Exception^ e )
{
Console::WriteLine( "ZoneIdentityPermission demo failed." );
Console::WriteLine( e );
Console::WriteLine( "Press the Enter key to exit." );
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
// This sample demonstrates the IsSubsetOf, Union, Intersect,
// Copy, ToXml and FromXml methods
// of the ZoneIdentityPermission class.
import System.*;
import System.Security.*;
import System.Security.Permissions .* ;
/** @assembly CLSCompliant(true)
*/
public class ZoneIdentityDemo
{
// IsSubsetOf determines whether the current permission
// is a subset of the specified permission.
private boolean IsSubsetOfDemo()
{
boolean returnValue = true;
SecurityZone zone1[] = new SecurityZone[1];
SecurityZone zone2[] = new SecurityZone[1];
ZoneIdentityPermission zoneIdPerm1[] = new ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm2[] = new ZoneIdentityPermission[1];
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) {
if (zoneIdPerm1[0] == null) {
continue;
}
zoneGen2.ResetIndex();
Console.WriteLine("****************************"
+ "****************************\n");
while (zoneGen2.CreateZone(zoneIdPerm2, zone2)) {
if (zoneIdPerm2[0] == null) {
continue;
}
try {
if (zoneIdPerm1[0].IsSubsetOf(zoneIdPerm2[0])) {
Console.WriteLine((zoneIdPerm1[0].get_SecurityZone()
+ " is a subset of "
+ zoneIdPerm2[0].get_SecurityZone()));
}
else {
Console.WriteLine((zoneIdPerm1[0].get_SecurityZone()
+ " is not a subset of " +
zoneIdPerm2[0].get_SecurityZone()));
}
}
catch (System.Exception e) {
Console.WriteLine(("An exception was thrown for subset :"
+ zoneIdPerm1[0] + "\n" + zoneIdPerm2[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;
SecurityZone zone1[] = new SecurityZone[1];
SecurityZone zone2[] = new SecurityZone[1];
ZoneIdentityPermission zoneIdPerm1[] = new ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm2[] = new ZoneIdentityPermission[1];
IPermission zoneIdPerm3;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) {
if (zoneIdPerm1[0] == null) {
continue;
}
Console.WriteLine("***************************************"
+ "*******************\n");
zoneGen2.ResetIndex();
while (zoneGen2.CreateZone(zoneIdPerm2, zone2)) {
if (zoneIdPerm2[0] == null) {
continue;
}
zoneIdPerm3 = ((ZoneIdentityPermission)(zoneIdPerm1[0].
Union(zoneIdPerm2[0])));
zoneIdPerm3 = zoneIdPerm1[0].Union(zoneIdPerm2[0]);
if (zoneIdPerm3 == null) {
Console.WriteLine(("The union of " + zone1[0] + " and "
+ zone2[0] + " is null."));
}
else {
Console.WriteLine(("The union of " + zoneIdPerm1[0].
get_SecurityZone() + " and "
+ zoneIdPerm2[0].get_SecurityZone() + " = "
+ ((ZoneIdentityPermission)(zoneIdPerm3)).
get_SecurityZone().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;
SecurityZone zone1[] = new SecurityZone[1];
SecurityZone zone2[] = new SecurityZone[1];
ZoneIdentityPermission zoneIdPerm1[] = new ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm2[] = new ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm3 = null;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) {
if (zoneIdPerm1[0] == null) {
continue;
}
Console.WriteLine("**********************************"
+ "************************\n");
zoneGen2.ResetIndex();
while (zoneGen2.CreateZone(zoneIdPerm2, zone2)) {
if (zoneIdPerm2[0] == null) {
continue;
}
zoneIdPerm3 = ((ZoneIdentityPermission)(zoneIdPerm1[0].
Intersect(zoneIdPerm2[0])));
if (zoneIdPerm3 != null) {
Console.WriteLine(("The intersection of " + zone1[0]
+ " and " + zone2[0] + " = " +
((ZoneIdentityPermission)(zoneIdPerm3)).
get_SecurityZone().ToString()));
}
else {
Console.WriteLine(("The intersection of " + zone1[0]
+ " and " + zone2[0] + " is null."));
}
}
}
return returnValue;
} //IntersectDemo
//Copy creates and returns an identical copy of the current permission.
private boolean CopyDemo()
{
boolean returnValue = true;
SecurityZone zone1[] = new SecurityZone[1];
ZoneIdentityPermission zoneIdPerm1[] = new ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm2 = null;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) {
if (zoneIdPerm1[0] == null) {
continue;
}
zoneGen2.ResetIndex();
Console.WriteLine("**********************************"
+ "**********************\n");
try {
zoneIdPerm2 = ((ZoneIdentityPermission)(zoneIdPerm1[0].Copy()));
Console.WriteLine(("Result of copy = "
+ zoneIdPerm2.ToString()));
}
catch (System.Exception e) {
Console.WriteLine(("Copy failed :"
+ zoneIdPerm1[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;
SecurityZone zone1[] = new SecurityZone[1];
ZoneIdentityPermission zoneIdPerm1[] = new
ZoneIdentityPermission[1];
ZoneIdentityPermission zoneIdPerm2 = null;
ZoneGenerator zoneGen1 = new ZoneGenerator();
ZoneGenerator zoneGen2 = new ZoneGenerator();
zoneGen1.ResetIndex();
while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) {
if (zoneIdPerm1[0] == null) {
continue;
}
Console.WriteLine("*********************************"
+ "***********************\n");
zoneGen2.ResetIndex();
try {
zoneIdPerm2 = new ZoneIdentityPermission(PermissionState.None);
zoneIdPerm2.FromXml(zoneIdPerm1[0].ToXml());
Console.WriteLine(("Result of ToFromXml = "
+ zoneIdPerm2.ToString()));
}
catch (System.Exception e) {
Console.WriteLine(("ToFromXml failed :"
+ zoneIdPerm1[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 {
ZoneIdentityDemo democase = new ZoneIdentityDemo();
boolean returnCode = democase.RunDemo();
if (returnCode) {
Console.get_Out().WriteLine("ZoneIdentityPermission"
+ " demo completed successfully.");
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(100);
}
else {
Console.get_Out().WriteLine("ZoneIdentityPermission"
+ " demo failed.");
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(101);
}
}
catch (System.Exception e) {
Console.get_Out().WriteLine("ZoneIdentityPermission demo failed.");
Console.WriteLine(e.ToString());
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(101);
}
} //main
} //ZoneIdentityDemo
// This class generates ZoneIdentityPermission objects.
class ZoneGenerator
{
private SecurityZone myZone[] = {
SecurityZone.NoZone, SecurityZone.Internet, SecurityZone.Intranet,
SecurityZone.MyComputer, SecurityZone.Untrusted, SecurityZone.Trusted };
private int zoneIndex = 0;
public ZoneGenerator()
{
ResetIndex();
} //ZoneGenerator
public void ResetIndex()
{
zoneIndex = 0;
} //ResetIndex
// CreateZone creates ZoneIdentityPermission objects.
public boolean CreateZone(ZoneIdentityPermission zonePerm[],
SecurityZone zone[])
{
if (zoneIndex >= myZone.length) {
zonePerm[0] = new ZoneIdentityPermission(PermissionState.None);
zone[0] = SecurityZone.NoZone;
zoneIndex++;
return false;
}
zone[0] = myZone[zoneIndex++];
try {
zonePerm[0] = new ZoneIdentityPermission(zone[0]);
return true;
}
catch (System.Exception e) {
Console.WriteLine(("Cannot create ZoneIdentityPermission: "
+ zone[0] + " " + e));
zonePerm[0] = new ZoneIdentityPermission(PermissionState.None);
zone[0] = SecurityZone.NoZone;
return true;
}
} //CreateZone
} //ZoneGenerator
继承层次结构
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.ZoneIdentityPermission
线程安全
此类型的任何公共静态（Visual Basic 中的 Shared）成员都是线程安全的，但不保证所有实例成员都是线程安全的。
平台
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 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
请参见
参考
ZoneIdentityPermission 成员
System.Security.Permissions 命名空间
ZoneIdentityPermissionAttribute
Zone
ZoneMembershipCondition