MarshalByRefObject.InitializeLifetimeService 方法
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
注意
This Remoting API is not supported and throws PlatformNotSupportedException.
获取生存期服务对象来控制此实例的生存期策略。
public:
virtual System::Object ^ InitializeLifetimeService();C#
[System.Obsolete("This Remoting API is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0010", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public virtual object InitializeLifetimeService ();C#
public virtual object InitializeLifetimeService ();C#
[System.Security.SecurityCritical]
public virtual object InitializeLifetimeService ();[<System.Obsolete("This Remoting API is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0010", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> objabstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> obj[<System.Security.SecurityCritical>]
abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> objPublic Overridable Function InitializeLifetimeService () As ObjectILease 类型的对象，用于控制此实例的生存期策略。 这是此实例当前的生存期服务对象（如果存在）；否则为初始化为 LeaseManagerPollTime 属性的值的新生存期服务对象。
- 属性
直接调用方没有基础结构权限。
仅限 .NET Core 和 .NET 5 及更高版本：在所有情况下。
下面的代码示例演示如何创建租约。
public ref class MyClass: public MarshalByRefObject
{
public:
[System::Security::Permissions::SecurityPermissionAttribute
(System::Security::Permissions::SecurityAction::Demand,
Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
virtual Object^ InitializeLifetimeService() override
{
ILease^ lease = dynamic_cast<ILease^>(MarshalByRefObject::InitializeLifetimeService());
if ( lease->CurrentState == LeaseState::Initial )
{
lease->InitialLeaseTime = TimeSpan::FromMinutes( 1 );
lease->SponsorshipTimeout = TimeSpan::FromMinutes( 2 );
lease->RenewOnCallTime = TimeSpan::FromSeconds( 2 );
}
return lease;
}
};
C#
public class MyClass : MarshalByRefObject
{
[SecurityPermissionAttribute(SecurityAction.Demand,
Flags=SecurityPermissionFlag.Infrastructure)]
public override Object InitializeLifetimeService()
{
ILease lease = (ILease)base.InitializeLifetimeService();
if (lease.CurrentState == LeaseState.Initial)
{
lease.InitialLeaseTime = TimeSpan.FromMinutes(1);
lease.SponsorshipTimeout = TimeSpan.FromMinutes(2);
lease.RenewOnCallTime = TimeSpan.FromSeconds(2);
}
return lease;
}
}
Public Class LSClass
Inherits MarshalByRefObject
<SecurityPermissionAttribute(SecurityAction.Demand, _
Flags:=SecurityPermissionFlag.Infrastructure)> _
Public Overrides Function InitializeLifetimeService() As Object
Dim lease As ILease = CType(MyBase.InitializeLifetimeService(), ILease)
If lease.CurrentState = LeaseState.Initial Then
lease.InitialLeaseTime = TimeSpan.FromMinutes(1)
lease.SponsorshipTimeout = TimeSpan.FromMinutes(2)
lease.RenewOnCallTime = TimeSpan.FromSeconds(2)
End If
Return lease
End Function
Public Shared Sub Main()
' The main thread processing is here.
End Sub
End Class
从 .NET 5 开始，此方法标记为已过时。
有关生存期服务的信息，请参阅 LifetimeServices 类。
| 产品 | 版本 （已过时） |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 7 (5, 6) |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 |
| .NET Standard | 2.0, 2.1 |