如何使用LINQ to SQL和C＃进行正确的连接

嘿伙计们，我在使用LINQ和C＃创建以下SQL语句时遇到问题＃

select c.IDAddenda, c.Descripcion from CatAddendas c right join EmpresaAddenda e on e.IDAddenda = c.IDAddenda where e.rfc = 'SUL010720JN8' order by c.IDAddenda asc 

我懂了

 public IEnumerable TraeAddendas(string rfc) { DataClasses1DataContext dc = new DataClasses1DataContext(...); return (from adds in dc.EmpresaAddendas cats.IDAddenda into joined where adds.RFC == rfc select adds.CatAddenda); } 

这不是正确的加入，所以任何想法？

Answer 1

  var RightJoin = from adds in dc.EmpresaAddendas join cats in CatAddendas on adds.IDAddenda equals cats.IDAddenda into joined from cats in joined.DefaultIfEmpty() select new { Id = cats.IDAddenda, Description = cats.Descripcion }; 

Answer 2

 var results = from e in EmpresaAddenda join c in CatAddendas on e.IDAddenda equals c.IDAddenda into f from c in f.DefaultIfEmpty() select new { ID = c.IDAddenda, Description = c.Descripcion }; 

您可以在结果中申请地点和订购。