Question

过去三个小时我一直在搜索这个，所以如果有人问过并回答我很抱歉，但我找不到解决办法。

我有一个mainform frmPHDLP和子表单（连续数据表）frmPHDUpdate。两种形式都没有。 frmPHDLP上有一个标签控件，可显示真实世界的办公地点。子表单将根据所选选项卡显示每个位置的员工列表。我在VBA中的子窗体中设置RecordSource。

第一个标签非常完美。问题是，当我在mainform上选择一个新选项卡时，我无法获取子窗体以使用新位置重新查询SQL。 SQL语句构建在子表单的Form_Current事件中。

显然正在运行Me!frmPHDUpdate.Form.Requery不会触发子表单上的Form_Current事件。因为它为什么会这样？

三个小时。纳达。谢谢你的帮助。

frmPHDLP代码：

Private Sub tabOffices_Change()
    Me!frmPCLPUpdateSF.Requery

End Sub

frmPHDUpdate代码：

Private Sub Form_Current()
    Dim strSearch As String
    Dim strSQL As String

    Select Case Me.Parent!tabOffices.Value
        Case 0
            strSearch = "8401"
        Case 1
            strSearch = "8400"
        Case 2
            strSearch = "8403"
        Case 3
            strSearch = "8402"
        Case 4
            strSearch = "8404"
        Case 5
            strSearch = "8405"
        Case 6
            strSearch = "8413"
        Case 7
            strSearch = "8411"
    End Select

    strSQL = "SELECT tblEmployee.ID, tblEmployee.[LastName] & "", "" & [FirstName] AS EmpName, tblPHDLProgram.MemberOfPHDL, tblOffices.OfficeID FROM tblOffices INNER JOIN (tblPHDLP RIGHT JOIN tblEmployee ON tblPHDLP.ID = tblEmployee.ID) ON tblOffices.ID = tblEmployee.Office WHERE (((tblOffices.OfficeID)= " & strSearch & "));"
    Me.RecordSource = strSQL

End Sub

Answer 1

查看 MasterLinkFields / ChildLinkFields 。

我猜你可以使用 tabOffices 和 OfficeID 并删除所有这些代码。

Answer 2

您应该使代码更加模块化。此外，您不应该更改Form_Current上的窗体记录源，因为它会重新查询窗体，并触发另一个当前窗口，并触发无限循环。这可能都是由Access避免无限循环引起的。

frmPHDUpdate代码：

Public Sub BuildSQL()
    Dim strSearch As String
    Dim strSQL As String
    Select Case Me.Parent!tabOffices.Value
        Case 0
            strSearch = "8401"
        Case 1
            strSearch = "8400"
        Case 2
            strSearch = "8403"
        Case 3
            strSearch = "8402"
        Case 4
            strSearch = "8404"
        Case 5
            strSearch = "8405"
        Case 6
            strSearch = "8413"
        Case 7
            strSearch = "8411"
    End Select
    strSQL = "SELECT tblEmployee.ID, tblEmployee.[LastName] & "", "" & [FirstName] AS EmpName, tblPHDLProgram.MemberOfPHDL, tblOffices.OfficeID FROM tblOffices INNER JOIN (tblPHDLP RIGHT JOIN tblEmployee ON tblPHDLP.ID = tblEmployee.ID) ON tblOffices.ID = tblEmployee.Office WHERE (((tblOffices.OfficeID)= " & strSearch & "));"
    Me.RecordSource = strSQL
End Sub

Private Sub Form_Load()
    Me.BuildSQL
End Sub

frmPHDLP代码：

Private Sub tabOffices_Change()
    Me!frmPCLPUpdateSF.Form.BuildSQL
End Sub

或者，甚至更好：将case语句移动到子表单SQL：

作为frmPHDUpdate的记录来源

SELECT tblEmployee.ID, tblEmployee.[LastName] & "", "" & [FirstName] AS EmpName, tblPHDLProgram.MemberOfPHDL, tblOffices.OfficeID 
FROM tblOffices 
INNER JOIN (tblPHDLP RIGHT JOIN tblEmployee ON tblPHDLP.ID = tblEmployee.ID) ON tblOffices.ID = tblEmployee.Office 
WHERE tblOffices.OfficeID = Switch(
    Forms!frmPHDLP!tabOffices = 0, 8401,
    Forms!frmPHDLP!tabOffices = 1, 8400,
    Forms!frmPHDLP!tabOffices = 2, 8403,
    Forms!frmPHDLP!tabOffices = 3, 8402,
    Forms!frmPHDLP!tabOffices = 4, 8404,
    Forms!frmPHDLP!tabOffices = 5, 8405,
    Forms!frmPHDLP!tabOffices = 6, 8413,
    Forms!frmPHDLP!tabOffices = 7, 8411
);

Mainform选项卡控制将值传递给select case

2 个答案: