菜鸟请教一个问题：我需要拉取某一时间点采集的数值，我的代码为：
If TimeOfDay = #8:00:00 AM# Then
                    irradiancestart(i) = value.Irradiance(i)
                ElseIf TimeOfDay = #4:00:00 PM# Then
                    irradianceend(i) = value.Irradiance(i) - irradiancestart(i)

                End If
            End If
可是这段程序没有执行，请教各位指点一下！谢谢