ObjectHandle.Unwrap 方法

定义

返回被包装的对象。Returns the wrapped object.

public:
 System::Object ^ Unwrap();
public:
 virtual System::Object ^ Unwrap();
public object? Unwrap ();
public object Unwrap ();
member this.Unwrap : unit -> obj
abstract member Unwrap : unit -> obj
override this.Unwrap : unit -> obj
Public Function Unwrap () As Object

返回

Object

被包装的对象。The wrapped object.

实现

示例

下面的代码示例演示如何在另一个中激活对象 AppDomain ,使用方法检索该对象的代理, Unwrap 并使用该代理来访问远程对象。The following code example demonstrates how to activate an object in another AppDomain, retrieve a proxy to it with the Unwrap method, and use the proxy to access the remote object.

// Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
ObjectHandle^ obj = domain->CreateInstance( "ObjectHandleAssembly", "MyType" );

// Unwraps the proxy to the MyType object created in the other AppDomain.
MyType^ testObj = dynamic_cast<MyType^>(obj->Unwrap());
if ( RemotingServices::IsTransparentProxy( testObj ) )
   Console::WriteLine( "The unwrapped object is a proxy." );
else
   Console::WriteLine( "The unwrapped object is not a proxy!" );

Console::WriteLine( "" );
Console::Write( "Calling a method on the object located in an AppDomain with the hash code " );
Console::WriteLine( testObj->GetAppDomainHashCode() );

// Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
ObjectHandle obj = domain.CreateInstance("ObjectHandleAssembly", "MyType");

// Unwrapps the proxy to the MyType object created in the other AppDomain.
MyType testObj = (MyType)obj.Unwrap();

if(RemotingServices.IsTransparentProxy(testObj))
   Console.WriteLine("The unwrapped object is a proxy.");
else
   Console.WriteLine("The unwrapped object is not a proxy!");

Console.WriteLine("");
Console.Write("Calling a method on the object located in an AppDomain with the hash code ");
Console.WriteLine(testObj.GetAppDomainHashCode());
' Creates an instance of MyType defined in the assembly called ObjectHandleAssembly.
Dim obj As ObjectHandle = domain.CreateInstance("ObjectHandleAssembly", "MyType")

' Unwrapps the proxy to the MyType object created in the other AppDomain.
Dim testObj As MyType = CType(obj.Unwrap(), MyType)

If RemotingServices.IsTransparentProxy(testObj) Then
   Console.WriteLine("The unwrapped object is a proxy.")
Else
   Console.WriteLine("The unwrapped object is not a proxy!")
End If 
Console.WriteLine("")
Console.Write("Calling a method on the object located in an AppDomain with the hash code ")
Console.WriteLine(testObj.GetAppDomainHashCode())

调用方说明

ObjectHandle MarshalByRefObject 由远程处理生存期服务跟踪的远程处理。A ObjectHandle is a remoted MarshalByRefObject that is tracked by the remoting lifetime service. 如果的生存期租约过期,则对当前方法的调用可能会失败 ObjectHandleA call to the current method can fail if the lifetime lease on the ObjectHandle expires.

适用于