語言

RemotingServices.GetObjRefForProxy(MarshalByRefObject) 方法

定義

命名空間:
System.Runtime.Remoting
組件:
mscorlib.dll

回傳 ObjRef 代表指定代理的遠端物件。

public:
 static System::Runtime::Remoting::ObjRef ^ GetObjRefForProxy(MarshalByRefObject ^ obj);
public static System.Runtime.Remoting.ObjRef GetObjRefForProxy(MarshalByRefObject obj);
[System.Security.SecurityCritical]
public static System.Runtime.Remoting.ObjRef GetObjRefForProxy(MarshalByRefObject obj);
static member GetObjRefForProxy : MarshalByRefObject -> System.Runtime.Remoting.ObjRef
[<System.Security.SecurityCritical>]
static member GetObjRefForProxy : MarshalByRefObject -> System.Runtime.Remoting.ObjRef
Public Shared Function GetObjRefForProxy (obj As MarshalByRefObject) As ObjRef

參數

obj
MarshalByRefObject

一個連接到你想建立 ObjRef 的物件的代理。

傳回

ObjRef

ObjRef A 代表指定代理所連接的遠端物件，或null若該物件或代理尚未被 marshaled。

屬性
SecurityCriticalAttribute

例外狀況

SecurityException

直接呼叫者沒有基礎設施權限。

範例

以下程式碼範例示範如何取得 ObjRef 指定物件的實例。

ObjRef^ objRefSample = RemotingServices::GetObjRefForProxy( myRemoteObject );
Console::WriteLine( "***ObjRef Details***" );
Console::WriteLine( "URI:\t {0}", objRefSample->URI );
array<Object^>^channelData = objRefSample->ChannelInfo->ChannelData;
Console::WriteLine( "Channel Info:" );
IEnumerator^ myEnum = channelData->GetEnumerator();
while ( myEnum->MoveNext() )
{
   Object^ o = safe_cast<Object^>(myEnum->Current);
   Console::WriteLine( "\t {0}", o );
}

IEnvoyInfo^ envoyInfo = objRefSample->EnvoyInfo;
if ( envoyInfo == nullptr )
{
   Console::WriteLine( "This ObjRef does not have envoy information." );
}
else
{
   IMessageSink^ envoySinks = envoyInfo->EnvoySinks;
   Console::WriteLine( "Envoy Sink Class: {0}", envoySinks );
}

IRemotingTypeInfo^ typeInfo = objRefSample->TypeInfo;
Console::WriteLine( "Remote type name: {0}", typeInfo->TypeName );
Console::WriteLine( "Can my Object* cast to a Bitmap? {0}", typeInfo->CanCastTo( System::Drawing::Bitmap::typeid, objRefSample ) );

ObjRef objRefSample = RemotingServices.GetObjRefForProxy(myRemoteObject);

Console.WriteLine("***ObjRef Details***");
Console.WriteLine("URI:\t{0}", objRefSample.URI);

object[] channelData = objRefSample.ChannelInfo.ChannelData;

Console.WriteLine("Channel Info:");
foreach(object o in channelData)
    Console.WriteLine("\t{0}", o.ToString());

IEnvoyInfo envoyInfo = objRefSample.EnvoyInfo;

if (envoyInfo == null) {
    Console.WriteLine("This ObjRef does not have envoy information.");
}
else {
    IMessageSink envoySinks = envoyInfo.EnvoySinks;
    Console.WriteLine("Envoy Sink Class: {0}", envoySinks);
}

IRemotingTypeInfo typeInfo = objRefSample.TypeInfo;
Console.WriteLine("Remote type name: {0}", typeInfo.TypeName);

Console.WriteLine("Can my object cast to a Bitmap? {0}",
    typeInfo.CanCastTo(typeof(System.Drawing.Bitmap), objRefSample));

Dim objRefSample As ObjRef = RemotingServices.GetObjRefForProxy(myRemoteObject)

Console.WriteLine("***ObjRef Details***")
Console.WriteLine("URI:" + ControlChars.Tab + "{0}", objRefSample.URI)

Dim channelData As Object() = objRefSample.ChannelInfo.ChannelData
Console.WriteLine("Channel Info:")

Dim o As Object
For Each o In  channelData
   Console.WriteLine(ControlChars.Tab + "{0}", o.ToString())
Next o

Dim envoyInfo As IEnvoyInfo = objRefSample.EnvoyInfo
If envoyInfo Is Nothing Then
   Console.WriteLine("This ObjRef does not have envoy information.")
Else
   Dim envoySinks As IMessageSink = envoyInfo.EnvoySinks
   Console.WriteLine("Envoy Sink Class: {0}", envoySinks)
End If

Dim typeInfo As IRemotingTypeInfo = objRefSample.TypeInfo
Console.WriteLine("Remote type name: {0}", typeInfo.TypeName)

Console.WriteLine("Can my object cast to a Bitmap? {0}", typeInfo.CanCastTo(GetType(System.Drawing.Bitmap), objRefSample))

備註

ObjRef 是物件可串行化的表示法，用來跨應用程式域界限傳輸對象參考。 為物件建立 a ObjRef 稱為 marshaling。 ObjRef 可以透過通道傳輸到另一個應用程式域（可能在另一個進程或計算機上）。 在其他應用程式域中，必須剖析 ObjRef，才能建立物件的 Proxy，通常連線到實際物件。 這種操作稱為解散。 在解封組過程中，會解析 以 ObjRef 擷取遠端物件的方法資訊，並建立透明代理與 RealProxy 物件。

A ObjRef 包含描述被封送物件類別的 Type 資訊、唯一識別特定物件實例的 URI，以及關於如何抵達物件所在遠端應用程式的通訊資訊。

適用於