Object containing the session - state data for the session that is ending 对象，包含正在结束会话的会话状态数据。
Message confirming that the expense payment has been issued , and then ends the conversation 消息，确认付款已发出，然后结束会话。
Gets or sets a value indicating whether to cancel the user request to end the session 获取或设置一个值，该值指示是否取消用户请求以结束会话。
The dialog remains in the database until an application explicitly ends the conversation 对话将保留在数据库中，直到应用程序显式结束会话为止。
To end a session , a soap client sends a request such as the following with the known and valid 若要结束会话， soap客户端将发出下面所示的请求，设置已知的有效
Ending the conversation with an error notifies the other participant in the conversation that the task failed 通过结束会话并返回一个错误，可以通知该会话的其他参与者该任务已失败。
An application that detects poison messages must be careful to clean up any state associated with the conversation when ending the conversation 在结束会话时，检测有害消息的应用程序必须小心清除任何与该会话关联的状态。
In most services , one participant is responsible for indicating that the conversation is complete and successful by ending the conversation without an error 在大多数服务中，其中一个参与者负责通过无错误地结束会话，指示会话完成且成功。
For example , an application that uses message retention may need to preserve some messages for a conversation before the application ends the conversation 例如，使用消息保持期的应用程序可能需要在应用程序结束会话之前保留会话的某些消息。
Although the amount of state for a particular conversation is small , an application that does not end conversations may suffer reduced performance over time 尽管特定会话的状态量很小，但是随着时间的推移，不结束会话的应用程序的性能可能会下降。
