C# 使用 ToArray() 将列表转换为数组
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Converting a list to an array with ToArray()
提问by Jodll
I've created a class called listItem and the following list:
我创建了一个名为 listItem 的类和以下列表：
List<listItem> myList = new List<listItem>();
At some point in my code, I want to convert it to an array, thereby using:
在我的代码中的某个时刻，我想将其转换为数组，从而使用：
listItem[] myArray = myList.ToArray();
Unfortunately, this doesn't work, and I get this error message:
不幸的是，这不起作用，我收到此错误消息：
Cannot convert [...] listItem[] to [...] List<listItem>
I tried to figure this out, but very unsuccessfully...
我试图弄清楚这一点，但非常不成功......
Thanks in advance.
提前致谢。
EDIT: My bad, the first code line I wrote was indeed mistyped!
编辑：我的错，我写的第一行代码确实打错了！
Actually, all the code above works pretty well. My error was due to the fact that my function:
实际上，上面的所有代码都运行得很好。我的错误是由于我的函数：
List<listItem> myFunction()
returned myArray, hence the conversion problem... It is now fixed. :)
返回 myArray，因此转换问题...现在已修复。:)
Thank you all for your answers.
谢谢大家的答案。
采纳答案by Gabber
This is the error (as pointed out from Darkshadw and Jon Skeet)
这是错误（正如 Darkshadw 和 Jon Skeet 指出的那样）
listItem myList = new List<listItem>();
You are assigning the value of a List to a listItem.
您正在将 List 的值分配给 listItem。
Replace it with
将其替换为
List<listItem> myList = new List<listItem>();
to create a list of listItem. Then
创建一个 listItem 列表。然后
listItem[] myArray = myList.ToArray();
will work.
将工作。
回答by Jodll
have you tried
你有没有尝试过
listItem[] myArray = myList.ToArray(new listItem[]{});
in Java it works, im not sure in c#
在 Java 中它有效，我不确定在 C# 中
回答by R.D.
string[] s = myList.ToArray();
Considering myList is list of string
考虑到 myList 是字符串列表
