# EF Core Include

1. `using Microsoft.EntityFrameworkCore;`
> 需先Using EFcore

2. 找主表的關係
> `.Include(x => x.子表)`

3. 多子表為
> `.Include(x => x.子表1)`
> `.Include(x => x.子表2)`
> `.Include(x => x.子表3)`

4. 找子表的關聯
> `.Include(x => x.子表).ThenInclude(子表 => 子表.孫子表)`

5. 多孫子表
> `.Include(x => x.子表).ThenInclude(子表 => 子表.孫子表1)`
> `.Include(x => x.子表).ThenInclude(子表 => 子表.孫子表2)`
> `.Include(x => x.子表).ThenInclude(子表 => 子表.孫子表3)`