vb.net里的日期 vb中日期型数据怎么表示

vb.net中怎么获取日期中的年月日时分秒Dim ThisDay As String = Format(Now, "yyyy-MM-dd")'获得当前日期字符串
Dim ThisDateTime As DateTime = Convert.ToDateTime(ThisDay)'当前日期转换成DateTime
【vb.net里的日期 vb中日期型数据怎么表示】Dim ThisWeekDay As Integer = ThisDateTime.DayOfWeek'获得当前日期是星期几
Dim differadd As Integer = 1 - ThisWeekDay'相差vb.net里的日期的天数(星期1与当前星期几相差vb.net里的日期的天数)
Dim MyAdd As New TimeSpan(differadd, 0, 0, 0)
Dim MyYear As Integer = Format(Now, "yyyy")'获取当前日期vb.net里的日期的年份
Dim MyMonth As Integer = Format(Now, "MM")'获取当前日期vb.net里的日期的月份
Dim MyDay As Integer = Format(Now, "dd")'获取当前日期是几号
Dim MyToday As DateTime = New DateTime(MyYear, MyMonth, MyDay)
Dim Yourday As DateTime = MyToday.Add(MyAdd)
MsgBox("本周星期一的日期是vb.net里的日期:"Yourday)
vb.net 查询 日期dim现在的时间as date = Now
"Select * From 表 Where 开始的时间= # "现在的时间"#And 结束的时间= # "现在的时间" # "
VB.net 获取日期dim myMonth as string= DateTime.Now.tostring("MM")
年月日时分秒
DateTime.Now.tostring("yyyy-MM-dd hh-dd-ss") ‘得到2011-03-30 09-08-05
DateTime.Now.tostring("yy-M-d h-d-s") ‘得到11-3-30 9-8-5
vb.net中日期类型怎么从字符串转换Dim a As String
Dim b As Date
a = "2016-11-18"
b = CDate(a)
本例中最主要vb.net里的日期的就是CDate()函数vb.net里的日期,这个函数是用于把字符型变量转换成日期型变量vb.net里的日期,
字符型变量(本例中的a)如果不是标准的日期格式vb.net里的日期,请先用字符串函数处理成标准日期格式再用CDate函数进行转换vb.net里的日期 , 否则会报错
vb.net中如何获取当前日期所在星期的星期一的具体年月日Dim ThisDay As String = Format(Now, "yyyy-MM-dd")'获得当前日期字符串
Dim ThisDateTime As DateTime = Convert.ToDateTime(ThisDay)'当前日期转换成DateTime
Dim ThisWeekDay As Integer = ThisDateTime.DayOfWeek'获得当前日期是星期几
Dim differadd As Integer = 1 - ThisWeekDay'相差的天数(星期1与当前星期几相差的天数)
Dim MyAdd As New TimeSpan(differadd, 0, 0, 0)
Dim MyYear As Integer = Format(Now, "yyyy")'获取当前日期的年份
Dim MyMonth As Integer = Format(Now, "MM")'获取当前日期的月份
Dim MyDay As Integer = Format(Now, "dd")'获取当前日期是几号
Dim MyToday As DateTime = New DateTime(MyYear, MyMonth, MyDay)
Dim Yourday As DateTime = MyToday.Add(MyAdd)
MsgBox("本周星期一的日期是:"Yourday)
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