Table of contents
TOC
折叠目录
展开目录

Form.OnCurrent 属性 (访问)Form.OnCurrent Property (Access)

office 365 dev account|上次更新日期: 2018/3/13
|
2 参与人员

设置或返回窗体的属性窗口中的当前框的值。读/写,字符串Sets or returns the value of the On Current box in the Properties window of a form. Read/write String.

语法Syntax

表达式成为当前expression. OnCurrent

表达式_一个表示窗体对象的变量。_expression A variable that represents a Form object.

注解Remarks

该属性有助于以编程方式更改事件别触发时 Microsoft Access 所采取的行动。例如,在各次事件调用之间可能要根据触发事件的环境更改表达式的参数,或从一个事件过程切换到一个表达式或宏。This property is helpful for programmatically changing the action Microsoft Access takes when an event is triggered. For example, between event calls you may want to change an expression's parameters, or switch from an event procedure to an expression or macro, depending on the circumstances under which the event was triggered.

当焦点移至某个记录使其成为当前记录时,或者当刷新或重新查询窗体时, Current事件发生。The Current event occurs when the focus moves to a record, making it the current record, or when the form is refreshed or requeried.

OnCurrent值将为以下操作,具体取决于在选择生成器窗口 (通过在窗体的属性窗口中应用筛选框旁的生成按钮来访问) 中所选内容之一:The OnCurrent value will be one of the following, depending on the selection chosen in the Choose Builder window (accessed by clicking the Build button next to the On Apply Filter box in the form's Properties window):

  • 如果选择表达式生成器,则值将为"=表达式" ,其中_表达式_是表达式生成器窗口中的表达式。If Expression Builder is chosen, the value will be "= expression ", where expression is the expression from the Expression Builder window.

  • 如果选择了“宏生成器”,则该值是宏的名称。If Macro Builder is chosen, the value is the name of the macro.

  • 如果选择了“代码生成器”,则该值是“[事件过程]”。If Code Builder is chosen, the value will be "[Event Procedure]".

如果当前框为空,属性值将为空字符串。If the On Current box is blank, the property value is an empty string.

示例Example

下面的示例将当前事件与"订单输入"窗体的宏"Current_Macro"。The following example associates the Current event with the macro "Current_Macro" for the "Order Entry" form.

Forms("Order Entry").OnDeactivate = "Current_Macro" 

另请参阅See also

概念Concepts

窗体对象Form Object

© 2018 Microsoft