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我有一個組合框,它會在第一次使用時創建列表。我知道我希望「NotInList」的行爲方式不是傳統方式 - 我不想浪費將項目添加到與所需條目分開的表格中,但我仍想警告某件物品,還沒有被使用,所以用戶在接受輸入之前必須考慮三次。動態組合框列表的警告
一旦用戶添加的項目,它會自動在下一個時間,因爲組合框的數據源出現在列表如下:
SELECT tbl_SP.PROGRAM
FROM tbl_SP
GROUP BY tbl_SP.PROGRAM
HAVING (((tbl_SP.PROGRAM) Is Not Null And (tbl_SP.PROGRAM)<>""));
我嘗試這樣做:
Private Sub cmbPROGRAM_NotInList(NewData As String, Response As Integer)
If MsgBox("'" & Chr(34) & NewData & Chr(34) & " hasn't been used yet. Add to list? ", vbQuestion + vbYesNo, "Add - " & NewData & "?") = vbYes Then
Response = acDataErrAdded
End If
End Sub
但是當然,Access在發佈錯誤之前希望項目實際存在。並且...如果我將LimitToList設置爲「否」,那麼用戶不會收到警告。
我該如何實現這種行爲?
好吧,我想這其中工作正常,如果用戶選擇了YES,但變得更加複雜,當用戶選擇「否」
Public Function ReturnsRecords(strSQL As String) As Boolean
Dim d As DAO.Database
Dim arr(1 To 3) As DAO.Recordset
'Dim rs As DAO.Recordset
'assume 3 items in array above
Set d = CurrentDb
Set arr(1) = d.OpenRecordset(strSQL)
' MsgBox "Record Count is " & arr(1).RecordCount
If arr(1).RecordCount > 0 Then
ReturnsRecords = True
Else
ReturnsRecords = False
End If
Set d = Nothing
End Function
Private Sub cmbPROGRAM_BeforeUpdate(Cancel As Integer)
Dim strSQL As String
strSQL = "Select * from LU_PROGRAM where PROGRAM ='" & Me.cmbPROGRAM & "'"
If ReturnsRecords(strSQL) = False Then
If MsgBox("'" & Chr(34) & Me.cmbPROGRAM & Chr(34) & " hasn't been used yet. Add to list? ", vbQuestion + vbYesNo, "Add - " & Me.cmbPROGRAM & "?") = vbNo Then
Cancel = True
' how do I reset this? Me.cmbPROGRAM.Text = Null
End If
End If
End Sub
如何清除組合框,如果用戶選擇NO?如果我選擇me.undo,則會撤消所有條目,但我只想清除組合框。
順便說一句,形式是完全綁定,直到用戶選擇「保存」
謝謝。這是我的不受約束的形式,使它成爲一項挑戰。我希望避免創建查找庫,但我認爲它終於來了 – monty327