ReadAllLines为Stream对象？ [英] ReadAllLines for a Stream object?

问题描述

有存在 File.ReadAllLines 而不是 Stream.ReadAllLines 。

using (Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("Test_Resources.Resources.Accounts.txt"))
using (StreamReader reader = new StreamReader(stream))
{
    // Would prefer string[] result = reader.ReadAllLines();
    string result = reader.ReadToEnd();
}

是否存在一个办法做到这一点还是我必须通过文件行手动循环一行？

Does there exist a way to do this or do I have to manually loop through the file line by line?

推荐答案

您可以编写一行行读取的方法，如：

You can write a method which reads line by line, like this:

public IEnumerable<string> ReadLines(Func<Stream> streamProvider,
                                     Encoding encoding)
{
    using (var stream = streamProvider())
    using (var reader = new StreamReader(stream, encoding))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            yield return line;
        }
    }
}

然后调用它为：

var lines = ReadLines(() => Assembly.GetExecutingAssembly()
                                    .GetManifestResourceStream(resourceName),
                      Encoding.UTF8)
                .ToList();

的 Func键＆LT;＆GT; 部分是阅读一次以上时应付，并且避免留下流开不必要的。你可以很容易包装，当然在一个方法code了。

The Func<> part is to cope when reading more than once, and to avoid leaving streams open unnecessarily. You could easily wrap that code up in a method, of course.

如果你不需要这一切在内存中一次，你甚至不需要在了ToList ...

If you don't need it all in memory at once, you don't even need the ToList...

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