C# 将列表保存到txt文件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15300572/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Saving lists to txt file
提问by Jared Price
I'm trying to save a list to a text file.
我正在尝试将列表保存到文本文件。
This is my code:
这是我的代码：
public void button13_Click(object sender, EventArgs e)
{
TextWriter tw = new StreamWriter("SavedLists.txt");
tw.WriteLine(Lists.verbList);
tw.Close();
}
This is what I get in the text file:
这是我在文本文件中得到的：
System.Collections.Generic.List`1[System.String]
System.Collections.Generic.List`1[System.String]
Do I have to use ConvertAll<>? If so, I'm not sure how to use that.
我必须使用ConvertAll<>吗？如果是这样，我不确定如何使用它。
采纳答案by jgallant
Assuming your Generic List is of type String:
假设您的通用列表是字符串类型：
TextWriter tw = new StreamWriter("SavedList.txt");
foreach (String s in Lists.verbList)
tw.WriteLine(s);
tw.Close();
Alternatively, with the using keyword:
或者，使用 using 关键字：
using(TextWriter tw = new StreamWriter("SavedList.txt"))
{
foreach (String s in Lists.verbList)
tw.WriteLine(s);
}
回答by Reacher Gilt
@Jon's answer is great and will get you where you need to go. So why is your code printing out what it is. The answer: You're not writing out the contents of your list, but the String representation of your list itself, by an implicit call to Lists.verbList.ToString(). Object.ToString()defines the default behavior you're seeing here.
@Jon 的回答很棒，会带你去你想去的地方。那么为什么你的代码打印出它是什么。答案：您不是在写出列表的内容，而是通过隐式调用 Lists.verbList.ToString() 来写出列表本身的字符串表示。Object.ToString()定义了您在此处看到的默认行为。
回答by Eric Bole-Feysot
Framework 4: no need to use StreamWriter:
框架 4：无需使用 StreamWriter：
System.IO.File.WriteAllLines("SavedLists.txt", Lists.verbList);
