将此 LINQ 代码查询转换为 lambda 表达式

Question

我想用 lambda 表达式转换这段代码

 var employees = from e in dataContext.AccountTrees
                        where (id.HasValue ? e.ParentId == id : e.ParentId == null)
                        select new
                        {
                            id = e.AccountId,
                            Name = e.Name,
                            hasChildren = e.AccountTrees1.Any(),
                        };

Answer 1

 dataContext.AccountTrees.Where(e => id.HasValue ? e.ParentId.Value == id.Value : e.ParentId == null).Select(x => new {id = e.AccountId, Name = e.Name, hasChildren = e.AccountTrees1.Any()})