Report OnLoad 属性 (Access)Report.OnLoad property (Access)

设置或返回报表的 “属性” 窗口中“加载”框的值。Sets or returns the value of the On Load box in the Properties window of a report. 读/写 StringRead/write String.

语法Syntax

表达式OnLoadexpression.OnLoad

_表达式_一个代表**Report** 对象的变量。expression A variable that represents a Report object.

说明Remarks

此属性有助于以编程方式更改在触发事件时 Microsoft Access 所采取的操作。This property is helpful for programmatically changing the action that Microsoft Access takes when an event is triggered. 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。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.

当报表打开并显示其记录时,就会发生 Load 事件。The Load event occurs when a report is opened and its records are displayed.

根据 "选择生成器" 窗口 (在报表的 "属性" 窗口中选择 "加载" 框旁边的 "生成" 按钮即可访问该窗口) 中所选内容的不同, OnLoad值将为下列值之一:The OnLoad value will be one of the following, depending on the selection chosen in the Choose Builder window (accessed by choosing the Build button next to the On Load box in the report's Properties window):

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

  • 如果选择 "宏生成器", 则值是宏的名称。If you choose Macro Builder, the value is the name of the macro.

  • 如果选择 "代码生成器", 则值将为 [事件过程]。If you choose Code Builder, the value will be [Event Procedure].

如果 “加载” 框为空,属性值将为空字符串。If the On Load box is blank, the property value is an empty string.

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