ObjRef.TypeInfo Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan atau mengatur IRemotingTypeInfo untuk objek yang ObjRef dijelaskan.
public:
virtual property System::Runtime::Remoting::IRemotingTypeInfo ^ TypeInfo { System::Runtime::Remoting::IRemotingTypeInfo ^ get(); void set(System::Runtime::Remoting::IRemotingTypeInfo ^ value); };
public virtual System.Runtime.Remoting.IRemotingTypeInfo TypeInfo { get; set; }
member this.TypeInfo : System.Runtime.Remoting.IRemotingTypeInfo with get, set
Public Overridable Property TypeInfo As IRemotingTypeInfo
Nilai Properti
IRemotingTypeInfo untuk objek yang ObjRef dijelaskan.
Contoh
// a custom ObjRef class that outputs its status
[System::Security::Permissions::SecurityPermissionAttribute(
System::Security::Permissions::SecurityAction::Demand,
Flags=System::Security::Permissions::SecurityPermissionFlag::SerializationFormatter)]
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::Demand,
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::InheritanceDemand,
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
public ref class MyObjRef: public ObjRef
{
private:
// only instantiate via marshaling or deserialization
MyObjRef(){}
public:
MyObjRef( MarshalByRefObject^ o, Type^ t )
: ObjRef( o, t )
{
Console::WriteLine( "Created MyObjRef." );
ORDump();
}
MyObjRef( SerializationInfo^ i, StreamingContext c )
: ObjRef( i, c )
{
Console::WriteLine( "Deserialized MyObjRef." );
}
virtual void GetObjectData( SerializationInfo^ s, StreamingContext c ) override
{
// After calling the base method, change the type from ObjRef to MyObjRef
ObjRef::GetObjectData( s, c );
s->SetType( GetType() );
Console::WriteLine( "Serialized MyObjRef." );
}
virtual Object^ GetRealObject( StreamingContext context ) override
{
if ( IsFromThisAppDomain() || IsFromThisProcess() )
{
Console::WriteLine( "Returning actual Object* referenced by MyObjRef." );
return ObjRef::GetRealObject( context );
}
else
{
Console::WriteLine( "Returning proxy to remote Object*." );
return RemotingServices::Unmarshal( this );
}
}
void ORDump()
{
Console::WriteLine( " --- Reporting MyObjRef Info --- " );
Console::WriteLine( "Reference to {0}.", TypeInfo->TypeName );
Console::WriteLine( "URI is {0}.", URI );
Console::WriteLine( "\nWriting EnvoyInfo: " );
if ( EnvoyInfo != nullptr )
{
IMessageSink^ EISinks = EnvoyInfo->EnvoySinks;
while ( EISinks != nullptr )
{
Console::WriteLine( "\tSink: {0}", EISinks );
EISinks = EISinks->NextSink;
}
}
else
Console::WriteLine( "\t {no sinks}" );
Console::WriteLine( "\nWriting ChannelInfo: " );
for ( int i = 0; i < ChannelInfo->ChannelData->Length; i++ )
Console::WriteLine( "\tChannel: {0}", ChannelInfo->ChannelData[ i ] );
Console::WriteLine( " ----------------------------- " );
}
};
// a class that uses MyObjRef
public ref class LocalObject: public MarshalByRefObject
{
public:
// overriding CreateObjRef will allow us to return a custom ObjRef
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::LinkDemand,
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
virtual ObjRef^ CreateObjRef( Type^ t ) override
{
return gcnew MyObjRef( this,t );
}
};
// a custom ObjRef class that outputs its status
public class MyObjRef : ObjRef {
// only instantiate via marshaling or deserialization
private MyObjRef() { }
public MyObjRef(MarshalByRefObject o, Type t) : base(o, t) {
Console.WriteLine("Created MyObjRef.");
ORDump();
}
public MyObjRef(SerializationInfo i, StreamingContext c) : base(i, c) {
Console.WriteLine("Deserialized MyObjRef.");
}
public override void GetObjectData(SerializationInfo s, StreamingContext c) {
// After calling the base method, change the type from ObjRef to MyObjRef
base.GetObjectData(s, c);
s.SetType(GetType());
Console.WriteLine("Serialized MyObjRef.");
}
public override Object GetRealObject(StreamingContext context) {
if ( IsFromThisAppDomain() || IsFromThisProcess() ) {
Console.WriteLine("Returning actual object referenced by MyObjRef.");
return base.GetRealObject(context);
}
else {
Console.WriteLine("Returning proxy to remote object.");
return RemotingServices.Unmarshal(this);
}
}
public void ORDump() {
Console.WriteLine(" --- Reporting MyObjRef Info --- ");
Console.WriteLine("Reference to {0}.", TypeInfo.TypeName);
Console.WriteLine("URI is {0}.", URI);
Console.WriteLine("\nWriting EnvoyInfo: ");
if ( EnvoyInfo != null) {
IMessageSink EISinks = EnvoyInfo.EnvoySinks;
while (EISinks != null) {
Console.WriteLine("\tSink: " + EISinks.ToString());
EISinks = EISinks.NextSink;
}
}
else
{
Console.WriteLine("\t {no sinks}");
}
Console.WriteLine("\nWriting ChannelInfo: ");
for (int i = 0; i < ChannelInfo.ChannelData.Length; i++)
Console.WriteLine ("\tChannel: {0}", ChannelInfo.ChannelData[i]);
Console.WriteLine(" ----------------------------- ");
}
}
// a class that uses MyObjRef
public class LocalObject : MarshalByRefObject {
// overriding CreateObjRef will allow us to return a custom ObjRef
public override ObjRef CreateObjRef(Type t) {
return new MyObjRef(this, t);
}
}
Keterangan
TypeInfo berisi informasi terperinci tentang jenis objek jarak jauh yang diwakili oleh saat ini ObjRef. Properti saat ini berisi daftar antarmuka yang diterapkan jenis, serta hierarki jenis. Informasi ini mungkin digunakan untuk memperbaiki proksi secara bertahap untuk menyesuaikan dengan tampilan klien dari jenis objek jarak jauh.