如何将utf8字符串转换为utf8字节数组？

How can I convert string to utf8 byte array, I have this sample code:

如何将字符串转换为utf8字节数组，我有这个示例代码：

This works ok:

这样可行：

StreamWriter file = new StreamWriter(file1, false, Encoding.UTF8);
file.WriteLine(utf8string);
file.Close();

This works wrong, file is in ASCII:

这工作错误，文件是ASCII：

byte[] bytes = System.Text.UTF8Encoding.UTF8.GetBytes(utf8string);
FileStream fs = new FileStream(file2, FileMode.CreateNew);
fs.Write(bytes, 0, bytes.Length);
fs.Close();

I would like to get byte array what returned by this function:

我想得到这个函数返回的字节数组：

System.IO.File.ReadAllBytes(path_to_file)

because this works ok:

因为这样可行：

byte[] datab = File.ReadAllBytes(file1);
FileStream fs2 = new FileStream(file3, FileMode.CreateNew);
fs2.Write(datab, 0, datab.Length);
fs2.Close();

2 个解决方案

#1

Can use other option again:

可以再次使用其他选项：

string value = "\u00C4 \uD802\u0033 \u00AE";    
byte[] bytes= System.Text.Encoding.UTF8.GetBytes(value);

For more information can look on Encoding.UTF8 Property

有关更多信息，请查看Encoding.UTF8属性

#2

-6

You just wanted to convert utf8string to bytes, what are these filestreams for?

你只想将utf8string转换为字节，这些文件流是什么？

String ValueToConvert = "Stack overflow";
byte[] ConvertedBytes = ValueToConvert.getBytes("UTF-8");

#1