为什么不初始化与财产归还名单＆LT工作; T＆GT;？ [英] Why doesn't initializer work with properties returning list<t>?

问题描述

无法找到这个问题的答案。它必须是显而易见的，但仍然。

Couldn't find an answer to this question. It must be obvious, but still.

我尝试使用初始化在这个简单的例子：

I try to use initializer in this simplified example:

    MyNode newNode = new MyNode 
    {
        NodeName = "newNode",
        Children.Add(/*smth*/) // mistake is here
    };

让孩子因为这个类，它返回一个列表的属性。在这里，我遇到了一个错误，这是这样'无​​效的初始成员声明。

where Children is a property for this class, which returns a list. And here I come across a mistake, which goes like 'Invalid initializer member declarator'.

什么是错在这里，你怎么初始化这样的属性？感谢很多提前！

What is wrong here, and how do you initialize such properties? Thanks a lot in advance!

推荐答案

您不能调用类的方法，对象初始化 - 你只能设置属性或字段，而不是调用方法。然而，在这种情况下，你可能的可以的仍使用对象和集合初始化语法：

You can't call methods like that in object initializers - you can only set properties or fields, rather than call methods. However in this case you probably can still use object and collection initializer syntax:

MyNode newNode = new MyNode
{
    NodeName = "newNode",
    Children = { /* values */ }
};

请注意，这将不尝试新的值赋给孩子，它会调用 Children.Add（...），像这样的：

Note that this won't try to assign a new value to Children, it will call Children.Add(...), like this:

var tmp = new MyNode();
tmp.NodeName = "newNode":
tmp.Children.Add(value1);
tmp.Children.Add(value2);
...
MyNode newNode = tmp;

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