[英]Is it possible to update a generic property on an abstract base class via the constructor for all sub-classes?
這可能代表較差的設計,但是如果您希望通過構造函數在抽象類中具有泛型屬性,則不僅可以在直接子類中而且可以在子類的子類中設置類型和值?
public interface IFirst { }
public interface ISecond { }
public abstract class A<T> {
public T SomeProperty { get; }
protected A(T someProperty) {
SomeProperty = someProperty;
}
}
public class B : A<IFirst> {
public B(IFirst someProperty) : base(someProperty) {
}
}
public class C : B {
public C(IFirst someProperty) : base(someProperty) {
//What if I wanted to pass in ISecond as a type to SomeProperty by instantiating this class?
}
}
對於B的所有子類,我只能使用IFirst作為傳遞給構造函數的類型。
是否有解決此問題的設計模式或解決方案?
謝謝,
你可以使用其他interface
派生的兩個定義的interfaces
從:
public interface IBase {}
public interface IFirst : IBase { }
public interface ISecond : IBase { }
public abstract class A<T> {
public T SomeProperty { get; }
protected A(T someProperty) {
SomeProperty = someProperty;
}
}
public class B : A<IBase> {
public B(IBase someProperty) : base(someProperty) {
}
}
public class C : B {
public C(ISecond someProperty) : base(someProperty) {
//Works now
}
}
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