Implicit convert List

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夕颜
夕颜 2020-12-03 17:11

I am using Linq to Entities.

Have an entity \"Order\" which has a nullable column \"SplOrderID\".

I query my Orders list as

List          


        
4条回答
  •  無奈伤痛
    2020-12-03 17:40

    linq

    var lst = (from t in Orders
               where t.SplOrderID.HasValue
               select new Order
               {
                 SplOrderID = t.SplOrderID
               }).Select(c => c.SplOrderID.Value).ToList();
    

    or

       var lst = (from t in Orders
                   where t.SplOrderID.HasValue
                   select t.SplOrderID.Value).ToList();
    

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