StreamReader与BinaryReader？ [英] StreamReader vs BinaryReader?

问题描述

StreamReader 和 BinaryReader 均可用于从二进制文件中获取数据（例如）

Both StreamReader and BinaryReader can be used to get data from binary file ( for example )

BinaryReader：

   using (FileStream fs = File.Open(@"c:\1.bin",FileMode.Open))
            {
                    byte[] data = new BinaryReader(fs).ReadBytes((int)fs.Length);
                    Encoding.getstring....
            }

StreamReader：

  using (FileStream fs = File.Open(@"c:\1.bin",FileMode.Open))
            {
                using (StreamReader sr = new StreamReader(fs,Encoding.UTF8))
                {
                       var myString=sr.ReadToEnd();
                }
            }

有什么区别，何时应使用？

What is the difference and when should I use which ?

推荐答案

StreamReader和BinaryReader均可用于从二进制文件中获取数据

Both StreamReader and BinaryReader can be used to get data from binary file

嗯， StreamReader 可用于从文本的二进制表示形式获取文本数据。

Well, StreamReader can be used to get text data from a binary representation of text.

BinaryReader 可用于获取任意二进制数据。如果某些二进制数据恰好是文本的表示形式，那就很好-但这不是必须的。

BinaryReader can be used to get arbitrary binary data. If some of that binary data happens to be a representation of text, that's fine - but it doesn't have to be.

底线：

• 如果整个数据都是文本数据的简单二进制编码，请使用 StreamReader 。


• 如果您基本上已经获得了 binary 数据，而文本中可能恰好有 some 部分，请使用 BinaryReader

• If the entirety of your data is a straightforward binary encoding of text data, use StreamReader.
• If you've fundamentally got binary data which may happen to have some portions in text, use BinaryReader

例如，您不会尝试使用以下命令读取JPEG文件 StreamReader 。

So for example, you wouldn't try to read a JPEG file with StreamReader.

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