這個程式碼會取得使用期並直接延長它，如下列程式碼範例所示。
範例
Dim obj As New RemoteType()
Dim lease As ILease = CType(RemotingServices.GetLifetimeService(obj), ILease)
Dim expireTime As TimeSpan = lease.Renew(TimeSpan.FromSeconds(20))
RemoteType obj = new RemoteType();
ILease lease = (ILease)RemotingServices.GetLifetimeService(obj);
TimeSpan expireTime = lease.Renew(TimeSpan.FromSeconds(20));
編譯程式碼
這個範例需要：
- System.Runtime.Remoting.Lifetime 命名空間的參考。