主题：字符串值如何转换成为时段列赋值

时段里面，保存的是（秒数），你把时间转换成秒即可，比如

Dim str As String = "07:43:11"
Dim d As Date = str
Dim i As Double = d.Hour * 3600 + d.Minute * 60 + d.Second
msgbox(i)