鎖住數據庫中的表

領測軟件測試網 把表達式 True=False 放到表的 ValidationRule 屬性就能鎖上。 HardLockTable?實現了該功能。
聲明
Public MyDB As Database
Dim Dummy As Integer
函數
Function HardLockTable (ByVal whichAction As String,?ByVal aTable As String) As Integer
On Error GoTo HardLockTableError
HardLockTable = True
Select Case whichAction
Case "Lock"
MyDB.TableDefs(aTable).ValidationRule = "True=False"
MyDB.TableDefs(aTable).ValidationText =?"This table locked via " & ?"ValidationRule on " & Now
Case "UnLock"
MyDB.TableDefs(aTable).ValidationRule = ""
MyDB.TableDefs(aTable).ValidationText = ""
Case "TestThenUnLock"
If MyDB.TableDefs(aTable).ValidationRule = "True=False" Then
MyDB.TableDefs(aTable).ValidationRule = ""
MyDB.TableDefs(aTable).ValidationText = ""
End If
End Select
HardLockTableErrorExit:
'subFlushDBEngine
'optional, see next suggestion
Exit Function
HardLockTableError:
HardLockTable = False
MsgBox Error$ & " error " & "in HardLockTable trying " & "to " & whichAction & " " & aTable
Resume HardLockTableErrorExit
End Function
使用例子
'上鎖
Dummy = HardLockTable("Lock", "TestTable")
' 開鎖
Dummy = HardLockTable("UnLock", "TestTable") 

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