vb.net 日期加減法

'-----------------日期加法Dim str, str2 As String
str = "2008/05/2"
str2 = "2008/05/28"
Dim dd As String
dd = Convert.ToDateTime(str).AddDays(1)
MsgBox(dd)
'------------------日期減法
Dim str, str2 As String
str = "2008/05/2"
str2 = "2008/05/28"
Dim dd As String
dd = DateDiff(DateInterval.Day, Convert.ToDateTime(str), Convert.ToDateTime(str2)) MsgBox(dd)