我的问题是这样的：
我想使用自定义功能区命令按钮甚至电子表格中的简单命令按钮来初始化 OLEDB 数据库连接并更新/重新计算所有需要此类连接的相关用户定义函数，或我指定的那些。除了单击特定按钮时，我不希望重新计算这些函数中的任何一个。我很难弄清楚如何做到这一点。请提供您的帮助或建议。
有关我所做的详细信息，请参见下文：
我目前将数据存储在一个访问数据库中，我在 excel 中使用 vba 进行特定查询。我已将每个 datarequest 例程嵌入到名为 [fnc] 的模块下的一组函数中。然后，我从 Excel 电子表格中将它们作为用户定义的函数进行访问。这里给出一个例子：
Function ValueV(mm As String, yy As String, qtable As String, qcode As String, compare_period As Integer, average_period As Integer, weight As Boolean) As Variant
'Month Value Formula for Horizontal Data
'mm - month value 2-digit
'yy - year value 4-digit
'qtable - query table name eg. "cpia"
'qcode - query code for variable eg. "all0100"
'avgperiod - lag periods to average in calculation eg. 3-avgperiods for quarterly measure, 1-avgperiod for point measure.
'weight - boolean (true or false) value for weighting values given reference weight. Currently unsupported. Code should be extended to include this feature. (space holder for now)
Dim lag_value As Variant
Dim cur_value As Variant
lag_value = 0
cur_value = 0
'STEP-A: Gets the initial Value average or not.
'===============================================================
If compare_period > 0 Then
'Use this step to pickup initial value when compare_period <> 0 which requires a % change as opposed to a point value.
'Average_period must be greater than or equal to one (1). One (1) represents the current month which is the same as a point value.
lmm = fnc.lagdate(mm, yy, compare_period, "mm") 'lag month (a single month for mValueH)
lyy = fnc.lagdate(mm, yy, compare_period, "yy") 'lag year (a single month for mValueH)
smm = fnc.lagdate(mm, yy, compare_period + average_period - 1, "mm") 'dating backwards to account for average period
syy = fnc.lagdate(mm, yy, compare_period + average_period - 1, "yy") 'dating backwards to account for average period
'note, for smm & syy, the average period includes the lmm so we add back one (1)
'eg. 3-mth average is not 3-lags but current and 2-lags.
sdate1 = syy & fnc.numtext(smm)
'start date for query (begining of lag value including average period)
Set MyRecordset = New ADODB.Recordset
MySql = sql.sqlVSers(lmm, lyy, qtable, qcode, sdate1)
'MsgBox (MySql)
MyRecordset.Open MySql, MyConnect, adOpenStatic, adLockReadOnly
Do Until MyRecordset.EOF 'Loop to end and enter required values
lag_value = lag_value + MyRecordset(qcode)
MyRecordset.MoveNext
Loop
'Stop
lag_value = lag_value / average_period
MyRecordset.Close
End If
'STEP-B: Gets the current Value average or not.
'===============================================================
smm = fnc.lagdate(mm, yy, average_period - 1, "mm") 'dating backwards to account for average period
syy = fnc.lagdate(mm, yy, average_period - 1, "yy") 'dating backwards to account for average period
sdate1 = syy & fnc.numtext(smm)
'start date for query (begining of lag value including average period)
Set MyRecordset = New ADODB.Recordset
MySql = sql.sqlVSers(mm, yy, qtable, qcode, sdate1)
MyRecordset.Open MySql, MyConnect, adOpenStatic, adLockReadOnly
Do Until MyRecordset.EOF 'Loop to end and enter required values
cur_value = cur_value + MyRecordset(qcode)
MyRecordset.MoveNext
Loop
cur_value = cur_value / average_period
MyRecordset.Close
'STEP-C: Calculates the Requested % Change or Point Value.
'===============================================================
If compare_period = 0 Then
ValueV = cur_value
Else
ValueV = cur_value / lag_value * 100 - 100
End If
End Function
由于我完全绕过了子例程的使用，因此与数据库的连接当前是作为工作簿助手例程完成的，如下所示。
Private Sub Workbook_AfterSave(ByVal Success As Boolean)
Dim filePath
filePath = ThisWorkbook.Path
If Right$(filePath, 1) <> "\" Then filePath = filePath & "\"
MyConnect = "Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=" & filePath & "rsdata.accdb;"
End Sub
问题是，这种更新过程不太理想。理想情况下，我想在菜单栏中放置一个自定义按钮（单击它时）将连接到数据库并重新计算给定工作表或工作簿中使用的所有用户定义函数。
请提供您的建议或指出以前可能做过类似事情的地方。
提前致谢。JR。