按照來自另一張表的最高項對一個表結果進行排序

Question

我有一個用於存儲我的產品的產品表，以及另一個獲得該產品用戶投票的表投票。

Product:
ID
Name
Price
etc..

Votes:
ID
ProductID
IpAdress
DateTimeCreated

在最近的24小時內，如何在linq to sql中獲得投票最多的產品？ 我自己對L2S真的不滿意。

這是我到目前為止獲得的最接近的代碼，該代碼段應該獲得最后10票的投票權，但是我需要在過去24小時內獲得最高票數的投票權：

 var last10Voted = (from vote in context.Votes join product in 
 context.Products on vote.ProductID equals
 product.ID orderby vote.DateTimeCreated select product).Take(10);

Answer 1

var last10Voted =
  ( 
    from product in context.Products
    let votes = context.Votes
                       .Where(v=>v.ProductID == product.ID 
                                && v.DateTimeCreated >= DateTime.Now.AddHours(-24))
    orderby votes.Count() descending
    select product
 ).Take(10);

Answer 2

var topVotedProducts = 
    Votes.Where(v => v.DateTimeCreated > DateTime.Now.AddHours(-24))
        .GroupBy(v => v.ProductID)
        .Join(Products, g => g.Key, p => p.ID, (g,p) => new { cnt = g.Count(), prod = p.Name })
        .OrderByDescending(result => result.cnt);

產品：ID名稱價格等

投票：ID產品ID IpAdress DateTimeCreated

Answer 3

var mostVoted =
    from product in context.Products
    let votes = context.Votes.Count(vote => vote.ProductID == product.ID && (DateTime.Now - vote.DateTimeCreated).TotalHours <= 24)
    orderby votes descending
    select product;

var top10 = mostVoted.Take(10);