小编Han*_*ens的帖子

我想在具有抽象类类型的对象上调用子类实现。然而，这并不像我想象的那样工作。有没有办法做到这一点，不需要我在第二个 switch 语句中在类型之间切换？或者 C# 不允许这种类型的行为？

调用它的代码：

AbstractParentType wfp;

//Switch on diagram type and select processor
switch (qi.DIAGRAMTYPE)
{
    case 1:
        wfp = new T1(notifications);
        break;
    case 2:
        wfp = new T2(notifications);
        break;
    case 3:
        wfp = new T3(notifications);
        break;
    default:
        throw new Exception("Diagramtype not implemented");
}

bool result = false;
//Switch on action type
switch (qi.Type)
{
    case (int)WorkflowActionType.BelItem:
        //Do some case specific stuff here
        ...
        //Call method
        result = wfp.Meth1();
        break;
    ... (a bunch of cases) ...
    case (int)WorkflowActionType.WordDocument: …