我想看看一个故事的所有者是否希望在添加新评论时发送电子邮件通知.我希望包含Linq to sql的方法返回一个布尔值.

public bool NotifyOnComment(string username){
        var notify = (from s in db.AccountSettings
                      where s.UserName == username
                      select s.NotifyOnComment).DefaultIfEmpty(false);

        // clueless
    }

更新：

我现在在做以下事情：

var notify = (from s in db.AccountSettings
                      where s.UserName == username
                      select s.NotifyOnComment).SingleOrDefault();

        return (bool)notify;