MS Access通过依赖于窗体值 [英] MS Access pass through dependent on form value

问题描述

如何将传递查询分配给依赖于表单中另一个值的行源?

How do I assign a pass-through query to Row Source that is dependent on another value in the form?

基本上我想这样做:

SELECT x.companyid, 
       x.companyname, 
       x.productid
  FROM x
 WHERE (((x.CompanyID) = [Forms]![Reporting]![CompanyID_Control]))
ORDER BY x.productid;

但是，当然，传递查询不支持对任何表单控件的引用.

But of course pass-through queries do not support reference to any form controls.

我已阅读这里有一种通过VBA的方法，但是我不知道如何将VBA与控件的行源一起使用.

I have read here that there is a method via VBA, however I do not know how to use VBA in conjunction with the Row Source of a control.

推荐答案

正如Remou在他的回答中所述，链接表将使此操作变得更加容易.但是，如果您有一个名为MyQuery的传递查询，则可以执行以下操作，以使MyComboOrListBox控件的RowSource在CompanyID_Control的值更改时动态更新:

As Remou stated in his answer, linked tables will make this easier. However, if you have a pass-through query named MyQuery, you can do the following to make the RowSource of a MyComboOrListBox control update dynamically when the value of the CompanyID_Control changes:

Private Sub CompanyID_Control_AfterUpdate()
Dim SQL As String, qdf AS DAO.QueryDef
    Set qdf = CurrentDB.QueryDefs("MyQuery")
    qdf.SQL = " SELECT  x.companyid, x.companyname, x.productid " & _
              " FROM x " & _
              " WHERE x.CompanyID =" & Me.CompanyID_Control & _
              " ORDER BY x.productid;"
    Me.MyComboOrListBox.RowSource = "MyQuery"
End Sub

您还需要将CompanyID_Control的AfterUpdate属性设置为:
[Event Procedure].

You'll also need to set the AfterUpdate property of the CompanyID_Control to:
[Event Procedure].

请注意，即使按照Remou的建议使用链接表，您仍然需要CompanyID_Control的AfterUpdate事件中的代码来刷新组合框/列表框的行来源:

Note that even if you use linked tables as Remou suggested, you will still need code in the AfterUpdate event of the CompanyID_Control to refresh your combobox/listbox RowSource:

Private Sub CompanyID_Control_AfterUpdate()
    Me.MyComboOrListBox.Requery
End Sub

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