如何构建以下动态LINQ to Entities WHERE子句？

Question

我需要在LINQ模仿这对实体：

WHERE 
(title = 'title1' AND episodetitle = 'episodetitle1') 
OR 
(title = 'title2' AND episodetitle = 'episodetitle2') 

我尝试这样做：

if (title1 != null && episodeTitle1 != null) 
{ 
     query = query.Where(s => s.Title.Contains(title1)).Where(z => z.EpisodeTitle.Contains(episodeTitle1)); 
} 

if (title2 != null && episodeTitle2 != null) 
{ 
     query = query.Where(s => s.Title.Contains(title2)).Where(z => z.EpisodeTitle.Contains(episodeTitle2)); 
} 

但它给我这个：

([Extent1].[Title] LIKE @p__linq__0 ESCAPE '~') AND ([Extent1].[EpisodeTitle] LIKE @p__linq__1 ESCAPE '~') 
**AND** 
([Extent1].[Title] LIKE @p__linq__2 ESCAPE '~') AND ([Extent1].[EpisodeTitle] LIKE @p__linq__3 ESCAPE '~')} 

我需要改变AND上面的OR。

我该怎么做呢？

Answer 1

它串联在一个查询

query.Where(
s => (
(title1!=null && episodeTitle1!=null && s.Title.Contains(title1) && s.EpisodeTitle.Contains(episodeTitle1)) 
|| 
(title2!=null && episodeTitle2!=null && s .Title.Contains(title2) && s.EpisodeTitle.Contains(episodeTitle2))