我在表属性里写以下代码计算时间，当时计算后表中有计算结果，但是保存表并关闭狐表后再次打开就没有了，请版主确认一下

Select Case e.DataCol.name
    Case "生产开始时间","生产结束时间"
        Dim dr3 As DataRow = e.DataRow
        If dr3.IsNull("生产开始时间") Or dr3.IsNull("生产结束时间") Then
            dr3("开动时间") = Nothing
        Else
            Dim d1 As Date = dr3("生产结束时间")
            Dim d2 As Date = dr3("生产开始时间")
            Dim tp1, tp2 As TimeSpan
            If d1 < d2 Then
                d1 = d1.AddDays(1)
            End If
            Dim time As Double
            tp1 = d1 - d2
            time = tp1.TotalSeconds
            For Each dr As DataRow In DataTables("休息表").Select("")
                Dim d3 As Date = dr("开始时间")
                Dim d4 As Date = dr("结束时间")
                Dim d1s, d1e As Date
                If d4 > d2 Then
                    d1s = new Date(d2.Year, d2.Month, d2.day, d3.Hour, d3.Minute, 0)
                    d1e = new Date(d2.Year, d2.Month, d2.day, d4.Hour, d4.Minute, 0)
                Else
                    d1s = new Date(d1.Year, d1.Month, d1.day, d3.Hour, d3.Minute, 0)
                    d1e = new Date(d1.Year, d1.Month, d1.day, d4.Hour, d4.Minute, 0)
                End If
                If d1 > d1e Then
                    If d2 < d1e AndAlso d2 >= d1s Then
                        tp2 = d1e - d2
                        time = time - tp2.TotalSeconds
                    Else If d2 < d1s Then
                        tp2 = d1e - d1s
                        time = time - tp2.TotalSeconds
                    End If
                Else If d1 > d1s Then
                    If d2 < d1s Then
                        tp2 = d1 - d1s
                        time = time - tp2.TotalSeconds
                    Else
                        time = 0
                    End If
                End If
               
            Next
            dr3("开动时间") = time/60/60
           
        End If
End Select

附件DATA表中显示

下载信息  [文件大小：   下载次数： ]

点击浏览该文件:12.table

http://www.foxtable.com/help/topics/1380.htm

原来如此，是这样的。糊涂了，谢谢