RemotingServices.Marshal Method (MarshalByRefObject, String, Type)
[Visual Basic] Overloads Public Shared Function Marshal( _ ByVal Obj As MarshalByRefObject, _ ByVal ObjURI As String, _ ByVal RequestedType As Type _ ) As ObjRef [C#] public static ObjRef Marshal( MarshalByRefObject Obj, string ObjURI, Type RequestedType ); [C++] public: static ObjRef* Marshal( MarshalByRefObject* Obj, String* ObjURI, Type* RequestedType ); [JScript] public static function Marshal( Obj : MarshalByRefObject, ObjURI : String, RequestedType : Type ) : ObjRef;
- The object to convert into an ObjRef.
- The URI the object specified in the Obj parameter is marshaled with. Can be a null reference (Nothing in Visual Basic).
- The Type Obj is marshaled as. Can be a null reference (Nothing in Visual Basic).
An instance of the ObjRef class representing the object specified in the Obj parameter.
|RemotingException||Obj is a proxy of a remote object, and the ObjUri parameter is not a null reference (Nothing in Visual Basic).|
|SecurityException||At least one of the callers higher in the callstack does not have permission to configure remoting types and channels.|
An ObjRef is a serializable representation of an object used to transfer an object reference across an AppDomain boundary. Creating an ObjRef for an object is known as marshaling. The ObjRef can be transferred through a channel into another AppDomain (possibly on another process or computer). Once in the other AppDomain, the ObjRef must be parsed to create a proxy for the object, generally connected to the real object. This operation is known as unmarshaling. ObjRef s contain information that describes the Type and class of the object being marshaled, a URI that uniquely identifies the specific object instance, and communication related information on how to reach the remoting subdivision where the object is located.
The specified Type is used by the remoting infrastructure to limit the scope of the exposed type hierarchy. For example, if object A derives from object B, which derives from object C, and Marshal is called, then the client can cast the proxy between C and B but not to A.
During marshaling, the context from the current thread is used, not the context that was active when the object was created.
You cannot associate a URI with a proxy for one of two reasons: either the URI was generated at the server side for the object it represents, or the object is well known, in which case the URI is known. For this reason, if the Obj parameter is a proxy, an exception will be thrown. For custom proxies this restriction is relaxed because the transparent proxy is treated as the server object.
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
.NET Framework Security:
- SecurityPermission for configuration of the remoting infrastructure. Demand value: SecurityAction.Demand; Permission value: SecurityPermissionFlag.RemotingConfiguration
- SecurityPermission for configuration of the remoting infrastructure. Associated enumeration: SecurityPermissionFlag.RemotingConfiguration.