如何：续订租约
此代码获取租约并直接延长它，如下面的代码示例中所示。
示例
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));
编译代码
此示例要求：
- 对 System.Runtime.Remoting.Lifetime 命名空间的引用。