C# 声明一个列表并使用一个代码语句填充值
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Declare a List and populate with values using one code statement
提问by user1765862
I have following code
我有以下代码
var list = new List<IMyCustomType>();
list.Add(new MyCustomTypeOne());
list.Add(new MyCustomTypeTwo());
list.Add(new MyCustomTypeThree());
this of course works, but I'm wondering: how can I declare the list and populate it with values using one statement?
这当然有效，但我想知道：如何声明列表并使用一个语句用值填充它？
Thanks
谢谢
采纳答案by Colm Prunty
var list = new List<IMyCustomType>{
new MyCustomTypeOne(),
new MyCustomTypeTwo(),
new MyCustomTypeThree()
};
Edit: Asker changed "one line" to "one statement", and this looks nicer.
编辑：Asker 将“一行”更改为“一个声明”，这看起来更好。
回答by David Hoerster
You can use a collection initializor:
您可以使用集合初始值设定项：
var list = new List<IMyCustomType>() { new MyCustomTypeOne(), new MyCustomTypeTwo(), new MyCustomTypeThree() };
回答by Jamie Dixon
var list = new List<IMyCustomType>{ new MyCustomTypeOne(), new MyCustomTypeTwo() };
回答by nik0lias
var list = new List<IMyCustomType>
{
new MyCustomTypeOne(),
new MyCustomTypeTwo(),
new MyCustomTypeThree()
};
Not quite sure why you want it in one line?
不太确定为什么要在一行中使用它？
回答by Atish Dipongkor - MVP
use the collection initialiser
使用集合初始化器
var list = new List<IMyCustomType>
{
new MyCustomTypeOne(){Properties should be given here},
new MyCustomTypeTwo(){Properties should be given here},
new MyCustomTypeThree(){Properties should be given here},
}
