C# LINQ LEFT JOIN where子句不起作用

我需要返回所有事件的列表，以及用户可能拥有的任何事件RSVP。但是，不管我传递的用户名是什么，它都会返回每个rsvp。我的linq查询->

   return (from events in this._context.Context.Events
           join rsvps in (this._context.Context.RSVPs
                          .Where(o=> o.UserName == userName))
           on events equals rsvps.Event into re
           from rsvps in re.DefaultIfEmpty()
           select events);

关系是
Events.EventID=RSVPs.EventID

按以下方式执行：

from e in _context.Context.Events
join r in _context.Context.RSVPs.Where(o => o.UserName == userName)
    on e.EventID equals r.EventID into g
select new {
    Event = e,
    Rsvps = g
};

return (from events in this._context.Context.Events
        join rsvps in this._context.Context.RSVPs
        on events.EventIDequals equals rsvps.EventID into re
        from c in re.DefaultIfEmpty()
        where c.UserName == userName
        select new {events,rsvps});

---

如果您只想在适当的位置过滤事件的RSVPs属性，那么我想您可能可以使用

var events = _context.Context.Events;

foreach(var event in events)
{
    // Assuming the property is named RSVPs
    event.RSVPs = event.RSVPs.Where(o => o.UserName.Equals(userName));
}

return events;

---

<>我不认为它是整洁的。

这里似乎有些错误。具体地，事件的代码部分>代码等于RSVPS。事件< /代码>可能需要重写。哪个字段将事件表与RSVPs表相关联？RSVPs.EventID=事件。EventID@user1106741将events.EventID等于rsvps.EventID的

写入re

我不想创建匿名type@user1106741然后使用事件的导航属性