因此，这种机制要求客户端在切换到脱机模式前至少联机一次。
Therefore, this mechanism requires the client to be online at least one time before switching to offline mode.
客户机处于联机模式下时，切换回ContactSample应用程序来确认已显示新的本地联系人，如图8所示。
With the client in online mode, switch back to the contact Sample application to verify that the new local contact now appears as shown in figure 8.
当从脱机模式切换为联机模式时，此方法也很有用，因为应用程序可能已在脱机期间关闭。
This method is also useful when switching from offline mode to online mode, because the application may have been shut down while offline.
当从脱机模式切换为联机模式时，此方法也很有用，因为应用程序可能已在脱机期间关闭。
This method is also useful when switching from offline mode to online mode, because the application may have been shut down while offline.
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