我有许多派生自抽象类的类。在一个方法中,我收到一个对象,它是派生类之一。我需要检查一个对象的类型并分配给一个正确的属性。直接的解决方案的工作,但看起来像它可以重构。我不知道如何处理它,但:C#重构:检查派生类的类型并将其分配给同一类的变量
public MyDerived1 derived1;
public MyDerived2 derived2;
// ....
public MyDerivedX derivedX;
public void AssignValue(MyBaseClass entity)
{
var derivedOne = entity as MyDerived1;
if (derivedOne != null)
{
derived1 = derivedOne;
return;
}
var derivedTwo = entity as MyDerived2;
if (derivedTwo != null)
{
derived2 = derivedTwo;
return;
}
// ....
var derivedEx = entity as MyDerivedX;
if (derivedEx != null)
{
derivedX = derivedEx;
return;
}
}
为什么不使用'is'关键字?有关详细信息,请参阅此处:https://msdn.microsoft.com/en-us/library/scekt9xw(v=vs.110).aspx –
您可能只有一堆语句,如'derived1 = entity as MyDerived1;' – DavidG