c# - C# 中的集合和对象初始值设定项

Question

我需要在如下所示的分层数据集中存储对父对象的引用。甚至可以使用对象初始值设定项吗？是否有任何关键字引用“父”初始值设定项，或者我是否必须以经典方式执行此操作 - 首先声明父对象？

(我不知道在“？”字符之间写什么)

Scenarios.Add(new Scenario()
{
    scenarioNumber = Scenarios.Count,
    scenarioDescription = "Example scenario",
    Steps = new BindingList<Step>()
    {
        new Step(){ parent = ?Scenario?, stepNumber = 1, subSteps = new BindingList<Step>() },
        new Step(){ parent = ?Scenario?, stepNumber = 2, subSteps = new BindingList<Step>() },
        new Step(){ parent = ?Scenario?, stepNumber = 3,
            subSteps = new BindingList<Step>()
            {
                new Step() { parent = ?Step?, stepNumber = 1, subSteps = new BindingList<Step>() },
                new Step() { parent = ?Step?, stepNumber = 2, subSteps = new BindingList<Step>() },
            },
        }
    }
});  

Answer 1

对象初始化构造不允许这样做。

您可以改用静态工厂方法，例如:

static Scenario Create(int scenarioNumber, string scenarioDescription, BindingList<Step> steps)
{
    var scenario = new Scenario()
    {
        scenarioNumber = scenarioNumber,
        scenarioDescription = scenarioDescription,
    };
    foreach (var step in steps)
    {
        step.parent = scenario;
    }
    scenario.Steps = steps;
    return scenario;
}