解决方法摘自 studyhardlr 『http://www.javathinker.org/bbs/topic.jsp?db=7&topic=3749』
在SQL Server 2005 Reporting Services 报表中格式化日期的方法可以 FormatDateTime的函数,下面是它的定义: Visual Basic (Declaration)  Public Shared Function FormatDateTime ( _             Expression As DateTime, _             <OptionalAttribute> Optional NamedFormat As DateFormat = DateFormat.GeneralDate _             ) As String   Visual Basic (Usage)  Dim Expression As DateTime             Dim NamedFormat As DateFormat             Dim returnValue As String             returnValue = Strings.FormatDateTime(Expression, NamedFormat)   
下面是NamedFormat 的定义: Constant  Description   DateFormat.GeneralDate   Display a date and/or time. Display a date part as a short date. If there is a time part, display it as a long time. If present, both parts display.   DateFormat.LongDate   Display a date using the long date format specified in your computer's regional settings.   DateFormat.ShortDate   Display a date using the short date format specified in your computer's regional settings.   DateFormat.LongTime   Display a time using the time format specified in your computer's regional settings.   DateFormat.ShortTime   Display a time using the 24-hour format (hh:mm).   
它的类型就这么几种,很有限的,远远不能满足我们的需要。那怎么办? 
实际上在报表中可以使用 ToString 的方法,来定义任意格式的字符串格式。比如: cdate(“2007-12-12 1:3:40”).ToString("yyyy-MM-dd") 可以格式化成 2007-12-12的格式,还可以格式化成12/12/2007这样的格式,甚至可以格式化成 2007+12+12这样的格式。这样只要你的format 格式化字符串正确,就可以实现你想要的日期格式。
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