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ASP.NET中处理datetime的一些通用函数

点击次数：26 次 发布日期：2008-11-26 15:16:20 作者：源代码网
源代码网推荐 "Uses the Timespan method to subtract a certain number of days
Function Date1()
     Dim NewTime as DateTime
     NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
     NewTime = NewTime.Format("MM/dd/yyyy", DateTimeFormatInfo)
     response.write(NewTime)
End Function

"Uses the AddDays method to subtract X number of days
Public Function Date2()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.AddDays(-7)
  Dim s as string = NewTime
  return s
End Function

"Thanks to Paul Czywczynski for this idea
"This probably (In My opinion) Offers the most flexibility found so far
"Change where the MM/dd/yyyy to whatever
"response.write(System.String.Format("{0:d}",NewTime))
"would return just the name of the Day
Function Date3()
  Dim NewTime as DateTime = now.addDays(-7)
  response.write(System.String.Format("{0:MM/dd/yyyy}",NewTime))
End Function


Function Date4()
Dim NewTime as DateTime
  NewTime = now.addDays(-7)
  return NewTime.ToString()
End Function

"Uses the toLongTimeString method
Public Function Date5()
  Dim NewTime as DateTime
  NewTime = Now()
  return newtime.toLongTimeString()
End Function

"Uses the toShortTimeString method
Public Function Date6()
  Dim NewTime as DateTime
  NewTime = Now()
  return newtime.toShortTimeString()
End Function

"Uses the toLongDateString method
Public Function Date7()
  Dim NewTime as DateTime
  NewTime = Now()
  return newtime.toLongDateString()
End Function

"Uses the toShortDateString method
Public Function Date8()
  Dim NewTime as DateTime
  NewTime = Now()
  return newtime.toShortDatestring()
End Function

"Uses FormatDateTime function General format
Function Date9()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
  return formatdatetime(NewTime, 0)
End Function

"Uses FormatDateTime function LongDate format
Function Date10()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
  return formatdatetime(NewTime, 1)
End Function

"Uses FormatDateTime function ShortDate format
Function Date11()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
  return formatdatetime(NewTime, 2)
End Function

"Uses FormatDateTime function LongTime format
Function Date12()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
  return formatdatetime(NewTime, 3)
End Function

"Uses FormatDateTime function ShortTime format
Function Date13()
  Dim NewTime as DateTime
  NewTime = DateTime.Now.Subtract( New TimeSpan(7, 0, 0, 0) )
  return formatdatetime(NewTime, 4)
End Function

"Bring Back just the name of the Day
Function Date14()
  Dim NewTime as DateTime = now.addDays(-7)
  dim s as string
  s = (System.String.Format("{0:dddd}",NewTime))
  Return s
End Function

"Returns the Integer of what day of week
Function Date15()
  Dim MyDate as DateTime
  Dim MyWeekDay as Integer
  MyDate = Now.AddDays(-5)
  MyWeekDay = Weekday(MyDate)   
  return MyWeekDay
End Function

"Returns the Month Integer
Function Date16()
  Dim MyDate as DateTime
  Dim MyMonth as Integer
  MyDate = Now.AddDays(-5)
  MyMonth = Month(MyDate)   
  return MyMonth
End Function

"Returns just a formatted string
"This method provides just formatting but
"Very flexible with not a lot of code
Function Date17()
  Dim MyDate as String
  MyDate = Format(Now(), "yyyy")
  return MyDate
End Function
</script>

源代码网供稿.
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