从EF </t>生成动态IQueryable <t>

Question

我有一张满是订单的表，其中每个订单都有一个州（例如：failed, denied, pending, cancelled or success）

如何编写动态查询以按状态返回订单，我将传递一个或多个状态？

即所有失败，拒绝或取消的订单：

IQueryable<MyType> query = from o in Model.Orders
                           where o.OrderStatus == ("Failed" || "Denied" || "Cancelled")
                           select o;

Answer 1

您可以尝试使用Contains方法

string[] status = {"Failed", "Denied", "Cancelled"};

IQueryable<MyType> query = from o in Model.Orders
                           where status.Contains(o.OrderStatus)
                           select o;