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ADO InfoMessage 事件
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An event is a subroutine that can be called automatically after a specific operation has occurred.
事件就是在一个具体操作发生之后自动请求的一个字程序。
The InfoMessage event can be fired if a warning occurs in a connection operation.
如果在连接操作时产生警告，那么将会激发InfoMessage事件。
Syntax
语法
InfoMessage objerror,status,objconn |
| Parameter参数 | Description描述 |
|---|---|
| objerror | An Error object that contains the errors that are returned 指定一个包含所发生的错误的Error对象 |
| status | An EventStatusEnum value. If a warning occurs, status is set to adStatusOK and the objerror contains the warning 指定一个EventStatusEnum值。如果产生警告提示，那么状态必须设置为adStatusOK，并且objerror将保留这个警告提示 |
| objconn | A Connection object. The connection for which the warning occurred 指定在出现警告提示的连接对象 |
EventStatusEnum Values
| Constant常量 | Value值 | Description描述 |
|---|---|---|
| adStatusOK | 1 | The operation that fired the event was successful 激发事件操作成功 |
| adStatusErrorsOccurred | 2 | The operation that fired the event failed 激发事件操作失败 |
| adStatusCantDeny | 3 | Cannot cancel the pending operation 不可以取消正处于处理执行中的操作 |
| adStatusCancel | 4 | Cancels the operation that fired the event 取消激发事件的操作 |
| adStatusUnwantedEvent | 5 | Prevents subsequent notifications before the event method has finished executing 在时间的运行方法终止运行之前禁止后续的报告 |
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