鉴于以下课程
产品
- int ProductID
- 供应商[]供应商
......
Supplier
- int SupplierID
- string SupplierName
...
如果我有1000个产品的阵列,并且每个产品可以包含多个供应商,我如何从产品阵列中获得供应商ID [X]?
var suppliers =
from product in products
from supplier in product.Suppliers
where supplier.SupplierID == X
select supplier;
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或者使用等效的扩展方法:
var suppliers =
products.SelectMany(p => p.Suppliers).Where(s => s.SupplierID == X);
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