使用LINQ計算組中的指定列

Question

我得到了以下查詢，該查詢執行得很好，除了它始終具有ResubCount = 1，而不是每個UserId的值。

現在：

ResolvedDate: Date 

ResubCount = 1 

UserId = UserId 

查詢現在返回（比方說）從數據庫十個結果。

我希望它是這樣的：

ResolvedDate: Date 

ResubCount = 10 

UserId = UserId 

這是我的查詢：

var result = (from a in _dataContext.Activities 
          where a.IsResolved && a.ResolvedDate != null 
          group a by new { a.ResolvedDate, a.UserId } 
           into agroup 
           select new 
             { 
              ResolvedDate = EntityFunctions.TruncateTime(agroup.Key.ResolvedDate), 
              ResubCount = agroup.Count(), 
              UserId = from item in agroup select new { item.UserId } 

             }); 

Answer 1

相信的DateTime的時間部分可能會影響分組：

var result = (from a in _dataContext.Activities 
       where a.IsResolved && a.ResolvedDate != null 
       group a by new 
       { 
        ResolvedDate = EntityFunctions.TruncateTime(a.ResolvedDate), 
        UserId = a.UserId 
       } into agroup 
       select new 
       { 
        ResolvedDate = agroup.Key.ResolvedDate, 
        ResubCount = agroup.Count(), 
        UserId = agroup.Key.UserId 
       }); 

---

編輯：我有 a.ResolvedDate.Date，但是，我沒有相信是支持的。