爲什麼以下集團錯了?爲什麼'Func <IBase>'編譯'Func <TGeneric>其中TGeneric:IBase'不?
public interface IBase { }
public class ClassX : IBase
{
}
public class ClassY
{
public static ClassX FunctionReturnX() { return new ClassX(); }
}
public class ClassZ<TGeneric> where TGeneric : IBase
{
Func<IBase> funcInterface = ClassY.FunctionReturnX; //Right
Func<TGeneric> funcGeneric = ClassY.FunctionReturnX; //Wrong
}