LINQ的C＃组数

 

var q = from c in dsEC09.Employee

        group c by c.DepartMent into g

        select new { g.Key, Count = g.Count() };

标记为答案，如果其解决您的问题

Vivek克里希纳穆尔蒂:请参考下面的链接:imgsrc=http://www.orcode.com/img/ico/smiley_smile.gif当然，从链接codeprelang="cs"spanclass="code-keyword"var/spancategoryCounts=frompspanclass="code-keyword"in/spanproductsgrouppbyp.Categoryintogselectspanclass="code-keyword"new/span{Category=g.Key,ProductCount=g.Count()};/pre/code
Anuja帕瓦尔多尔

参照本imgsrc=http://www.orcode.com/img/ico/smiley_smile.gif{A2}]
Neema Derjan

codeprelang="cs"spanclass="code-keyword"var/spanQuery=frompspanclass="code-keyword"in/spanDCDC.EMP.GroupBy(p=>p.departmentname)selectspanclass="code-keyword"new/span{count=p.Count(),p.First().departmentname,};/pre/code的希望它可以帮助{S0的}