var query = (from p in dc.GetTable<Person>()
join pa in dc.GetTable<PersonAddress>() on p.Id equals pa.PersonId into tempAddresses
from addresses in tempAddresses.DefaultIfEmpty(new PersonAddress())
select new { p.FirstName, p.LastName, addresses.State });
只需要在页面中加入如下HTTP meta-tag:
<meta http-equiv=”X-UA-Compatible” content=”IE=EmulateIE7″ />
只要IE8一读到这个标签,它就会自动启动IE7兼容模式,保证页面完整展示.
还有一种方法是针对整个网站的,在IIS中加入如下描述符就可以有相同的效果,当然这么做范围更广.
<?xml version=”1.0″ encoding=”utf-8″?>
<configuration>
<system.webServer>
<httpProtocol>
<customHeaders>
<add name=”X-UA-Compatible” value=”IE=EmulateIE7″>
</customHeaders>
</httpProtocol>
</system.webServer>
</configuration>
或者你还可以使用IIS admin tool来定义,更为简单.
IIS, IE8, 兼容
PS: 只是权宜之计, 还是尽快符合W3C标准为好.
来源: http://www.cnbeta.com/articles/63391.htm
1 2 3 | using System.Globalization; GregorianCalendar gc = new GregorianCalendar(); int weekOfYear = gc.GetWeekOfYear(DateTime.Now, CalendarWeekRule.FirstDay, DayOfWeek.Monday); |
写成通用的方法，获取某一日期是该年中的第几周
1 2 3 4 5 6 7 8 9 10 11 | using System.Globalization; /// <summary> /// 获取某一日期是该年中的第几周 /// </summary> /// <param name="dt">日期</param> /// <returns>该日期在该年中的周数</returns> private int GetWeekOfYear(DateTime dt) { GregorianCalendar gc = new GregorianCalendar(); return gc.GetWeekOfYear(dt, CalendarWeekRule.FirstDay, DayOfWeek.Monday); } |
以前还在CSDN上遇到这样一个问题，就是计算某一年有多少周，同样可以用这个类的方法来解决
1 2 3 4 5 6 7 8 9 10 11 12 | using System.Globalization; /// <summary> /// 获取某一年有多少周 /// </summary> /// <param name="year">年份</param> /// <returns>该年周数</returns> private int GetWeekAmount(int year) { DateTime end = new DateTime(year, 12, 31); //该年最后一天 System.Globalization.GregorianCalendar gc = new GregorianCalendar(); return gc.GetWeekOfYear(end, CalendarWeekRule.FirstDay, DayOfWeek.Monday); //该年星期数 } |
来源: http://www.cnblogs.com/lxcnn/archive/2007/08/10/850046.html