ConstructorBuilder.AddDeclarativeSecurity Metoda

Reference

Definice

Obor názvů:: System.Reflection.Emit

Sestavení:: mscorlib.dll

Důležité

Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.

Přidá deklarativní zabezpečení do tohoto konstruktoru.

public:
 void AddDeclarativeSecurity(System::Security::Permissions::SecurityAction action, System::Security::PermissionSet ^ pset);

public void AddDeclarativeSecurity (System.Security.Permissions.SecurityAction action, System.Security.PermissionSet pset);

member this.AddDeclarativeSecurity : System.Security.Permissions.SecurityAction * System.Security.PermissionSet -> unit

Public Sub AddDeclarativeSecurity (action As SecurityAction, pset As PermissionSet)

Parametry

action: SecurityAction

Akce zabezpečení, která se má provést, například Požadavek, Assert atd.

pset: PermissionSet

Sada oprávnění, na která se akce vztahuje.

Výjimky

ArgumentOutOfRangeException

action je neplatný (RequestMinimum, RequestOptional a RequestRefuse jsou neplatné).

InvalidOperationException

Obsahující typ byl dříve vytvořen pomocí příkazu CreateType().

-nebo-

Sada pset oprávnění obsahuje akci, která byla přidána dříve nástrojem AddDeclarativeSecurity.

ArgumentNullException

pset je null.

Příklady

Následující ukázka kódu ilustruje použití .AddDeclarativeSecurity

MethodBuilder^ myMethodBuilder = nullptr;

AppDomain^ myCurrentDomain = AppDomain::CurrentDomain;
// Create assembly in current CurrentDomain
AssemblyName^ myAssemblyName = gcnew AssemblyName;
myAssemblyName->Name = "TempAssembly";
// Create a dynamic assembly
myAssemblyBuilder = myCurrentDomain->DefineDynamicAssembly(
   myAssemblyName, AssemblyBuilderAccess::RunAndSave );
// Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder->DefineDynamicModule( "TempModule" );
FieldInfo^ myFieldInfo =
   myModuleBuilder->DefineUninitializedData( "myField", 2, FieldAttributes::Public );
// Create a type in the module
TypeBuilder^ myTypeBuilder = myModuleBuilder->DefineType( "TempClass", TypeAttributes::Public );
FieldBuilder^ myGreetingField = myTypeBuilder->DefineField( "Greeting",
   String::typeid, FieldAttributes::Public );
array<Type^>^myConstructorArgs = {String::typeid};
// Define a constructor of the dynamic class.
ConstructorBuilder^ myConstructor = myTypeBuilder->DefineConstructor(
   MethodAttributes::Public, CallingConventions::Standard, myConstructorArgs );
PermissionSet^ myPset = gcnew PermissionSet( PermissionState::Unrestricted );
// Add declarative security to the constructor.
Console::WriteLine( "Adding declarative security to the constructor....." );
Console::WriteLine( "The Security action to be taken is \"DENY\" and" +
   " Permission set is \"UNRESTRICTED\"." );
myConstructor->AddDeclarativeSecurity( SecurityAction::Deny, myPset );
MethodAttributes myMethodAttributes = myConstructor->Attributes;
Type^ myAttributeType = MethodAttributes::typeid;
int myAttribValue = (int)myMethodAttributes;
if (  !myAttributeType->IsEnum )
{
   Console::WriteLine( "This is not an Enum" );
}
array<FieldInfo^>^myFieldInfo1 = myAttributeType->GetFields( static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Static) );
Console::WriteLine( "The Field info names of the Attributes for the constructor are:" );
for ( int i = 0; i < myFieldInfo1->Length; i++ )
{
   int myFieldValue =  *dynamic_cast<Int32^>(myFieldInfo1[ i ]->GetValue( nullptr ));
   if ( (myFieldValue & myAttribValue) == myFieldValue )
   {
      Console::WriteLine( "   {0}", myFieldInfo1[ i ]->Name );
   }
}

Type^ myType2 = myConstructor->DeclaringType;
Console::WriteLine( "The declaring type is : {0}", myType2 );
ParameterBuilder^ myParameterBuilder1 =
   myConstructor->DefineParameter( 1, ParameterAttributes::Out, "My Parameter Name1" );
Console::WriteLine( "The name of the parameter is : {0}",
   myParameterBuilder1->Name );
if ( myParameterBuilder1->IsIn )
      Console::WriteLine( "{0} is Input parameter.", myParameterBuilder1->Name );
else
      Console::WriteLine( "{0} is not Input Parameter.", myParameterBuilder1->Name );
ParameterBuilder^ myParameterBuilder2 =
   myConstructor->DefineParameter( 1, ParameterAttributes::In, "My Parameter Name2" );
Console::WriteLine( "The Parameter name is : {0}",
   myParameterBuilder2->Name );
if ( myParameterBuilder2->IsIn )
      Console::WriteLine( "{0} is Input parameter.", myParameterBuilder2->Name );
else
      Console::WriteLine( "{0} is not Input Parameter.", myParameterBuilder2->Name );

MethodBuilder myMethodBuilder=null;

AppDomain myCurrentDomain = AppDomain.CurrentDomain;
// Create assembly in current CurrentDomain
AssemblyName myAssemblyName = new AssemblyName();
myAssemblyName.Name = "TempAssembly";
// Create a dynamic assembly
myAssemblyBuilder = myCurrentDomain.DefineDynamicAssembly
   (myAssemblyName, AssemblyBuilderAccess.RunAndSave);
// Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("TempModule");
FieldInfo myFieldInfo =
   myModuleBuilder.DefineUninitializedData("myField",2,FieldAttributes.Public);
// Create a type in the module
TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("TempClass",TypeAttributes.Public);
FieldBuilder myGreetingField = myTypeBuilder.DefineField("Greeting",
   typeof(String), FieldAttributes.Public);
Type[] myConstructorArgs = { typeof(String) };
// Define a constructor of the dynamic class.
ConstructorBuilder myConstructor = myTypeBuilder.DefineConstructor(
   MethodAttributes.Public, CallingConventions.Standard, myConstructorArgs);
PermissionSet myPset = new PermissionSet(PermissionState.Unrestricted);
// Add declarative security to the constructor.
Console.WriteLine("Adding declarative security to the constructor.....");
Console.WriteLine("The Security action to be taken is \"DENY\" and" +
   " Permission set is \"UNRESTRICTED\".");
myConstructor.AddDeclarativeSecurity(SecurityAction.Deny,myPset);
MethodAttributes myMethodAttributes = myConstructor.Attributes;
Type myAttributeType = typeof(MethodAttributes);
int myAttribValue = (int) myMethodAttributes;
if(! myAttributeType.IsEnum)
{
   Console.WriteLine("This is not an Enum");
}
FieldInfo[] myFieldInfo1 = myAttributeType.GetFields(BindingFlags.Public | BindingFlags.Static);
Console.WriteLine("The Field info names of the Attributes for the constructor are:");
for (int i = 0; i < myFieldInfo1.Length; i++)
{
   int myFieldValue = (Int32)myFieldInfo1[i].GetValue(null);
   if ((myFieldValue & myAttribValue) == myFieldValue)
   {
      Console.WriteLine("   " + myFieldInfo1[i].Name);
   }
}

Type myType2 = myConstructor.DeclaringType;
Console.WriteLine("The declaring type is : "+myType2.ToString());
ParameterBuilder myParameterBuilder1 =
   myConstructor.DefineParameter(1,  ParameterAttributes.Out, "My Parameter Name1");
Console.WriteLine("The name of the parameter is : " +
   myParameterBuilder1.Name);
if(myParameterBuilder1.IsIn)
   Console.WriteLine(myParameterBuilder1.Name +" is Input parameter.");
else
   Console.WriteLine(myParameterBuilder1.Name +" is not Input Parameter.");
ParameterBuilder myParameterBuilder2 =
   myConstructor.DefineParameter(1, ParameterAttributes.In, "My Parameter Name2");
Console.WriteLine("The Parameter name is : " +
   myParameterBuilder2.Name);
if(myParameterBuilder2.IsIn)
   Console.WriteLine(myParameterBuilder2.Name +" is Input parameter.");
else
   Console.WriteLine(myParameterBuilder2.Name + " is not Input Parameter.");

Dim myMethodBuilder As MethodBuilder = Nothing

Dim myCurrentDomain As AppDomain = AppDomain.CurrentDomain
' Create assembly in current CurrentDomain
Dim myAssemblyName As New AssemblyName()
myAssemblyName.Name = "TempAssembly"
' Create a dynamic assembly
myAssemblyBuilder = _
      myCurrentDomain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.RunAndSave)
' Create a dynamic module in the assembly.
myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("TempModule")
Dim myFieldInfo As FieldInfo = _
    myModuleBuilder.DefineUninitializedData("myField", 2, FieldAttributes.Public)
' Create a type in the module
Dim myTypeBuilder As TypeBuilder = _
    myModuleBuilder.DefineType("TempClass", TypeAttributes.Public)
Dim myGreetingField As FieldBuilder = _
   myTypeBuilder.DefineField("Greeting", GetType(String), FieldAttributes.Public)
Dim myConstructorArgs As Type() = {GetType(String)}
' Define a constructor of the dynamic class.
Dim myConstructor As ConstructorBuilder = _
    myTypeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, _
                                    myConstructorArgs)
Dim myPset As New PermissionSet(PermissionState.Unrestricted)
' Add declarative security to the constructor.
Console.WriteLine("Adding declarative security to the constructor.....")
Console.WriteLine("The Security action to be taken is ""DENY"" and" + _
                  " Permission set is ""UNRESTRICTED"".")
myConstructor.AddDeclarativeSecurity(SecurityAction.Deny, myPset)
Dim myMethodAttributes As MethodAttributes = myConstructor.Attributes
Dim myAttributeType As Type = GetType(MethodAttributes)
Dim myAttribValue As Integer = CInt(myMethodAttributes)
If Not myAttributeType.IsEnum Then
   Console.WriteLine("This is not an Enum")
End If
Dim myFieldInfo1 As FieldInfo() = myAttributeType.GetFields(BindingFlags.Public Or _
                                                             BindingFlags.Static)
Console.WriteLine("The Field info names of the Attributes for the constructor are:")
Dim i As Integer
For i = 0 To myFieldInfo1.Length - 1
   Dim myFieldValue As Integer = CType(myFieldInfo1(i).GetValue(Nothing), Int32)
   If(myFieldValue And myAttribValue) = myFieldValue Then
      Console.WriteLine("   " + myFieldInfo1(i).Name)
   End If
Next i

Dim myType2 As Type = myConstructor.DeclaringType
Console.WriteLine("The declaring type is : " + myType2.ToString())
Dim myParameterBuilder1 As ParameterBuilder = _
    myConstructor.DefineParameter(1, ParameterAttributes.Out, "My Parameter Name1")
Console.WriteLine("The name of the parameter is : " + myParameterBuilder1.Name)
If myParameterBuilder1.IsIn Then
   Console.WriteLine(myParameterBuilder1.Name + " is Input parameter.")
Else
   Console.WriteLine(myParameterBuilder1.Name + " is not Input Parameter.")
End If
Dim myParameterBuilder2 As ParameterBuilder = _
    myConstructor.DefineParameter(1, ParameterAttributes.In, "My Parameter Name2")
Console.WriteLine("The Parameter name is : " + myParameterBuilder2.Name)
If myParameterBuilder2.IsIn Then
   Console.WriteLine(myParameterBuilder2.Name + " is Input parameter.")
Else
   Console.WriteLine(myParameterBuilder2.Name + " is not Input Parameter.")
End If

Poznámky

AddDeclarativeSecurity lze volat několikrát, přičemž každé volání určuje akci zabezpečení (například Demand, Asserta Deny) a sadu oprávnění, na která se akce vztahuje.

Poznámka

V rozhraní .NET Framework verze 1.0, 1.1 a 2.0 deklarativní atributy zabezpečení použité na konstruktor pomocí této metody jsou uloženy ve starém formátu metadat XML. Viz Generování deklarativních atributů zabezpečení.

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