父子级转化与泛型类型

Question

我有3个班命名为OptionFeature，Fabric，Material

Fabric是一个子类的Material。

现在我有一个OptionFeature<Fabric>类型的对象。如何将这个对象转换成OptionFeature<Material>

Answer 1

尝试像只针对接口和委托，不上课支持这一

class Program 
    { 
     static void Main(string[] args) 
     { 
      OptionFeature optionFeature = new OptionFeature(); 
      optionFeature.material = new Material(); 
      Fabric fabric = (Fabric)optionFeature.material; 
      List<Material> materials = new List<Material>(); 
      List<Fabric> fabrics = materials.Select(x => (Fabric)x).ToList(); 


     } 
    } 
    public class OptionFeature 
    { 
     public Material material {get;set;} 
    } 
    public class Material 
    { 
    } 
    public class Fabric : Material 
    { 
    }​