我使用类似的东西，但发生了一些例外。这是关于例外的信息。
例外： 类型＆＃39; System.NotSupportedException＆＃39;的例外情况发生在EntityFramework.SqlServer.dll中但未在用户代码中处理
其他信息：LINQ to Entities无法识别方法＆＃39; System.Collections.Generic.Dictionary 2[System.String,System.Collections.Generic.List 1 [System.Nullable 1[System.Int64]]] ToDictionary[<>f__AnonymousType5a 2，String，List 1](System.Collections.Generic.IEnumerable 1并[d＆GT; f__AnonymousType5a 2[System.String,System.Collections.Generic.List 1 [System.Nullable 1[System.Int64]]]], System.Func 2 [＆LT;＆GT; f__AnonymousType5a 2[System.String,System.Collections.Generic.List 1 [System.Nullable 1[System.Int64]]],System.String], System.Func 2 [＆LT;＆GT; f__AnonymousType5a 2[System.String,System.Collections.Generic.List 1 [System.Nullable 1[System.Int64]]],System.Collections.Generic.List 1 [System.Nullable`1 [System.Int64]]]）＆＃39;方法，并且此方法无法转换为商店表达式。
我的代码在这里：
List<Match> matches = new List<Match>();
using (var en = new LiveOddsEntities())
{
matches = (from m in en.Matches
join mi in en.MatchInfoes on m.match_id equals mi.match_id
join to in en.Tournaments on mi.tournament_id equals to.id
join ca in en.Categories on mi.category_id equals ca.id
join sp in en.Sports on mi.sport_id equals sp.id
join ht in en.Teams on mi.home_team_id equals ht.id
join at in en.Teams on mi.away_team_id equals at.id
where mi.DateOfMatch > ticks
orderby mi.DateOfMatch ascending
select new Match { MatchId = m.match_id, DateOfMatch = mi.DateOfMatch, Tournament = to.name, Category = ca.name, Sport = sp.name, HomeTeam = ht.name, AwayTeam = at.name, BetTypes = (from mat in en.Matches
join odd in en.Odds on mat.match_id equals odd.match_id
select new { odd.type, proba = (from matc in en.Matches
join odds in en.Odds on matc.match_id equals odds.match_id
where odd.type ==odds.type
select odds.subtype).ToList()}
).AsEnumerable().ToDictionary(k => k.type, k => k.proba) }).Skip(skip).Take(pageSize).ToList();
}
return matches;