查詢行數

Question

我有這樣的查詢組特定行的水平EF

var awards = from a in context.Awards 
      where a.TWID == employee.TWID 
      group a by a.AwardLevel; 

這給我的獎勵爲每個級別（1-4）什麼我想弄清楚如何從特定級別的獎項中提取計數。

ie: level1.count,level2.count etc. 

我知道這應該是一些簡單的lambda表達式，但我只是不能得到它。

UPDATE我正在尋找一種方法不寫4次不同的查詢。例如：

var level1 = awards.Level[0] 
var level2 = awards.Level[1] 

Answer 1

嘗試：

var awards = from a in context.Awards 
      where a.TWID == employee.TWID 
      group a by a.AwardLevel into award 
      select new 
      { 
       AwardLevel = award.Key, 
       Count = award.Count() 
      }; 

更新基於新的問題：

var awards = (from a in context.Awards 
       where a.TWID == employee.TWID 
       group a by a.AwardLevel into award 
       select new 
       { 
        AwardLevel = award.Key, 
        Count = award.Count() 
       }).ToDictionary(t => t.AwardLevel, t => t.Count);