当前位置: 首页 > 网络学院 > 服务端脚本教程 > ADO > ADO WillChangeField 与 FieldCh

ADO
ADO DataTypes
ADO 摘要
ADO 实例

ADO WillChangeField 与 FieldCh


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-03-04   浏览: 368 ::
收藏到网摘: n/a

The WillChangeField Event
WillChangeField事件

The WillChangeField event is triggered before the values of one or more Field Objects are changing.
WillChangeField事件是在一个或更多个的字段对象改变之前被激发。

Note: Before this event returns, set the status parameter to adStatusCancel to cancel the operation that caused this event. 
注意:在返回这个事件之前,将status[状态]参数设置为adStatusCancel可以取消运行该事件的操作程序。

The FieldChangeComplete Event
FieldChangeComplete事件

The FieldChangeComplete event is triggered after the values of one or more Field Objects have been changed.
FieldChangeComplete事件是在一个或更多个字段对象被改变之后被激发的。

Note: Before this event returns, set the status parameter to adStatusUnwantedEvent to prevent subsequent notifications. 
注意:在你返回这个方法之前,将status[状态]参数设置为adStatusUnwantedEvent可以阻止接下来一系列的通告提示。

Note: The WillChangeField event and the FieldChangeComplete event may occur when you set the Value property and calls the Update method with field and value array parameters.
注意:当你设置属性值并且对“字段/值(即字段对应的值)”数组参数请求Update[更新]方法时,WillChangeField事件和FieldChangeComplete事件将会被触发。

Syntax
语法

WillChangeField numfields,fields,status,objRs
FieldChangeComplete numfields,fields,objErr,status,objRs 

Parameter参数 Description描述
numfields The number of Field objects in fields
指定字段集中包含的字段数量
fields An array that contains Field objects with changes
制定一个数组。该数组包含了发生改变的字段对象
status An EventStatusEnum value that indicates the status of the execution of the event
指定一个EventStatusEnum值,用于指示事件执行的状态
objErr The name of an Error object that describes the error if status is set to adStatusErrorsOccurred, otherwise it is not set
指定一个错误对象的名称。如果status[状态]设置为adStatusErrorsOccurred,那么该对象将描述具体的错误信息
objRs The name of the Recordset Object that triggered this event
指定激发该事件的记录集对象的名称


EventStatusEnum Values

Constant常量 Value值 Description描述
adStatusOK 1 The operation that caused the event was successful
激发事件操作成功
adStatusErrorsOccurred 2 The operation that caused the event failed
激发事件操作失败
adStatusCantDeny 3 The operation that caused the event cannot be cancelled
不可以取消正处于处理执行中的操作
adStatusCancel 4 The operation that caused the event is cancelled
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

评论 (0) All

登陆 | 还没注册?