我想将字符串变量从UTF8转换为ISO8859-1,因为对于ä、ö、ü这样的特殊字符,我在C#中看到了?
。为了实现这个目标,我找到了这个post。但它对我不起作用。我试着找出原因……
我用下面的代码观察了C#中原始字符串和转换后字符串的字节数:
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Runtime.Serialization.IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
formatter.Serialize(stream, dt2.Rows[0][0]); // I read my string from a datatable and it is utf8 encoded
byte[] bytes = stream.GetBuffer();
下面这行代码:
Console.WriteLine(BitConverter.ToString(bytes).Replace("-", ""));
返回:
4652495343484BEFBFBD53455A55424552454954554E47454E2020
现在,我想编码为ISO-8859-1。为此,我使用以下代码:
var srcEncoding = Encoding.Default; // The original bytes are utf8 hence here "Default"
var destEncoding = Encoding.GetEncoding("ISO-8859-1");
var destBytes = Encoding.Convert(srcEncoding, destEncoding, bytes);
然后运行这行代码:
Console.WriteLine(BitConverter.ToString(destBytes).Replace("-", ""));
我得到了相同的十六进制代码。转换似乎不能正常工作
4652495343484BEFBFBD53455A55424552454954554E47454E2020
你知道为什么转换对我不起作用吗?
发布于 2019-05-13 00:08:31
发布于 2019-05-13 01:35:52
没有理由搞乱MemoryStream
%s和BinaryFormatter
%s。只需使用相应Encoding
的方法GetString
和GetBytes
。
byte[] oldBytes = new byte[] { 0x46, 0x52, 0x49, 0x53, 0x43, 0x48,
0x4B, 0xEF, 0xBF, 0xBD, 0x53, 0x45, 0x5A, 0x55, 0x42, 0x45, 0x52,
0x45, 0x49, 0x54, 0x55, 0x4E, 0x47, 0x45, 0x4E, 0x20, 0x20 };
Console.WriteLine($"oldBytes: {BitConverter.ToString(oldBytes)} ({oldBytes.Length})");
string oldStr = Encoding.UTF8.GetString(oldBytes);
Console.WriteLine($"oldStr: <{oldStr}>");
byte[] newBytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(oldStr);
Console.WriteLine($"newBytes: {BitConverter.ToString(newBytes)} ({newBytes.Length})");
string newStr = Encoding.GetEncoding("ISO-8859-1").GetString(newBytes);
Console.WriteLine($"newStr: <{newStr}>");
输出:
oldBytes: 46-52-49-53-43-48-4B-EF-BF-BD-53-45-5A-55-42-45-52-45-49-54-55-4E-47-45-4E-20-20 (27)
oldStr: <FRISCHK�SEZUBEREITUNGEN >
newBytes: 46-52-49-53-43-48-4B-3F-53-45-5A-55-42-45-52-45-49-54-55-4E-47-45-4E-20-20 (25)
newStr: <FRISCHK?SEZUBEREITUNGEN >
https://stackoverflow.com/questions/56100905
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