当搜索没有匹配结果时，Linq查询将返回所有行

Question

我有以下查询，问题是如果找不到匹配则返回所有结果。任何人都可以看到我出错的地方吗？

var searchResults = (from gId in dc.tbl1
    join data in dc.tbl2 on gId.ID equals data.UserId into joinTbls
    from data in joinTbls.DefaultIfEmpty()
    where  (data.OrderId == orderId) ||
        (data.CardHolderName == cardHolderName) ||
        (gId.Email == emailAddress) ||
        (gId.FirstName == firstName) ||
        (gId.LastName == lastName) ||
        ((IdGuid == null || gId.ID == IdGuid))

我认为这与某些事情有关：

from data in joinTbls.DefaultIfEmpty()

但我不确定如何解决它。

Answer 1

IMO是因为你的Where子句中有“OR”（||）。尝试将其替换为“AND”（＆amp;＆amp;）

很高兴帮助