linq到条件问题的实体

Question

我试图列出满足条件＃1或＃2的所有行，并返回＃1和＃2的两行。 ＃2。但问题是只返回满足一个条件（＃1或＃2）的行。

    var query = (from c in context.Tasks where 
                && ((c.FK_PrivacyID == 1 && c.Fk_TaskFollowerTypeID == 1)  
                 || (c.TaskFollower == FK_userID && c.Fk_TaskFollowerTypeID == 2))
                  orderby c.CreatedDate descending
                  orderby c.LastModificationDate descending 
                  select c)).ToList();

感谢任何帮助..

Answer 1

您想要条件1而不是条件2 - ＆gt; （条件1）＆amp;＆amp; ！（条件2）

var query = (from c in context.Tasks where 
                ((c.FK_PrivacyID == 1 && c.Fk_TaskFollowerTypeID == 1)  
                 && !(c.TaskFollower == FK_userID && c.Fk_TaskFollowerTypeID == 2))
                  orderby c.CreatedDate descending
                  orderby c.LastModificationDate descending 
                  select c).ToList();

Answer 2

尝试第一个“＆amp;＆amp;”在where子句之后，以及不必要的括号

    var query = (from c in context.Tasks where 
            (c.FK_PrivacyID == 1 && c.Fk_TaskFollowerTypeID == 1)  
             || (c.TaskFollower == FK_userID && c.Fk_TaskFollowerTypeID == 2)
              orderby c.CreatedDate descending
              orderby c.LastModificationDate descending 
              select c)).ToList();