Question

我有一个记录集TBLSOURCETARGETLINK，我想在更新后事件上更新。

我还需要确保在添加新记录之前不存在重复项。如果记录存在，我只想更新记录并添加新记录。

我正在努力与VBA和如何做到这一点的顺序。

请有人帮忙。

VBA目前看起来像这样：

Private Sub IsSource_AfterUpdate()

Dim VbaTableID As Integer
Dim VbaSystemID As Integer
Dim VbaFieldID As Integer
Dim db As DAO.Database
Dim rst As DAO.Recordset 
Dim tabledef As String
Dim strcriteria As String


Dim rstSourceTarget As Recordset
Set rstSourceTarget = CurrentDb.OpenRecordset(Name:="tblsouretargetlink",      Type:=RecordsetTypeEnum.dbOpenDynaset)


If IsNull(Me!TableID) Then
   Else
        VbaTableID = Me!TableID
End If


If IsNull(Me!SystemID) Then
   Else
        VbaSystemID = Me!SystemID
  End If

If IsNull(Me!FieldID) Then
   Else
        Vbafield = Me!FieldID
End If
strcriteria = "[systemid] = '" & Me.SystemID & "' And [tableid] = " &    Me.TableID And [FieldID] = " & Me.fieldid"

rs.FindFirst strcriteria

   If .NoMatch Then
        With rstSourceTarget
            .AddNew
            ![SystemID] = VbaSystemID
            ![SourceTable] = VbaTableID
            ![SourceField] = VbaFieldID
            .Update
        End With
   Else
        With rstSourceTarget
            .Edit
            ![IsSource] = -1
            .Update
   End If




End Sub

谢谢

Answer 1

试试这段代码：

Private Sub IsSource_AfterUpdate()

    Dim VbaTableID As Integer
    Dim VbaSystemID As Integer
    Dim VbaFieldID As Integer
    Dim db As DAO.Database
    Dim strCriteria As String
    Dim rstSourceTarget As Recordset

    Set db = CurrentDb
    ' don't use CurrentDb for opening recordsets, it's dynamic, you can lose reference to database.
    Set rstSourceTarget = db.OpenRecordset(Name:="tblsouretargetlink", Type:=RecordsetTypeEnum.dbOpenDynaset)

    If Not IsNull(Me!TableID) Then
        VbaTableID = Me!TableID
    End If

    If Not IsNull(Me!SystemID) Then
        VbaSystemID = Me!SystemID
    End If

    If Not IsNull(Me!fieldid) Then
        VbaFieldID = Me!fieldid
    End If

    strCriteria = "[systemid] = '" & Me.SystemID & "' And [tableid] = " & Me.TableID & " And [FieldID] = " & Me.fieldid

    With rstSourceTarget
        .FindFirst strCriteria
        If .NoMatch Then
            .AddNew
            ![SystemID] = VbaSystemID
            ![SourceTable] = VbaTableID
            ![SourceField] = VbaFieldID
            .Update
        Else
            .Edit
            ![IsSource] = -1
            .Update
        End If
    End With
End Sub

有很多错误，所以首先添加

Option Explicit

在每个模块的开头并重新编译项目（Debug-＆gt; Compile）

根据findfirst条件更新表

1 个答案: