主题：[求助]错误在哪？

Dim r As Row = Tables("派工").Current
If r IsNot Nothing Then
    Dim p As String = IIF(r.DataRow.RowState = DataRowState.Added, "A#", "U#")
    r.Save()
    '一定要在保存后合成信息,因为新增行的主键在保存后才生成
    Dim msg As String = p &  "派工" & "#" & r("_Identify")
    For Each bd As QQBuddy In QQClient.Buddies
        If bd.Online Then
            QQClient.Send(bd.name, msg)
        End If
    Next
End If
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