C# 将字符串从 UTF-8 转换为 ISO-8859-1 (Latin1) H
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C# Convert string from UTF-8 to ISO-8859-1 (Latin1) H
提问by Daniil Harik
I have googled on this topic and I have looked at every answer, but I still don't get it.
我在这个话题上用谷歌搜索过，我看过每个答案，但我仍然不明白。
Basically I need to convert UTF-8 string to ISO-8859-1 and I do it using following code:
基本上，我需要将 UTF-8 字符串转换为 ISO-8859-1，并使用以下代码执行此操作：
Encoding iso = Encoding.GetEncoding("ISO-8859-1");
Encoding utf8 = Encoding.UTF8;
string msg = iso.GetString(utf8.GetBytes(Message));
My source string is
我的源字符串是
Message = "??????üü"
But unfortunately my result string becomes
但不幸的是我的结果字符串变成
msg = "???¤???????μ????
What I'm doing wrong here?
我在这里做错了什么？
采纳答案by Nathan Baulch
Use Encoding.Convertto adjust the byte array before attempting to decode it into your destination encoding.
在尝试将其解码为目标编码之前，使用Encoding.Convert调整字节数组。
Encoding iso = Encoding.GetEncoding("ISO-8859-1");
Encoding utf8 = Encoding.UTF8;
byte[] utfBytes = utf8.GetBytes(Message);
byte[] isoBytes = Encoding.Convert(utf8, iso, utfBytes);
string msg = iso.GetString(isoBytes);
回答by Lasse V. Karlsen
You need to fix the source of the string in the first place.
您首先需要修复字符串的来源。
A string in .NET is actually just an array of 16-bit unicode code-points, characters, so a string isn't in any particular encoding.
.NET 中的字符串实际上只是一个由 16 位 unicode 代码点、字符组成的数组，因此字符串没有任何特定的编码。
It's when you take that string and convert it to a set of bytes that encoding comes into play.
当您获取该字符串并将其转换为一组字节时，编码就起作用了。
In any case, the way you did it, encoded a string to a byte array with one character set, and then decoding it with another, will not work, as you see.
在任何情况下，如您所见，您使用一种字符集将字符串编码为字节数组，然后使用另一种字符集对其进行解码的方式将不起作用。
Can you tell us more about where that original string comes from, and why you think it has been encoded wrong?
你能告诉我们更多关于原始字符串的来源，以及你认为它编码错误的原因吗？
回答by Klaus Byskov Pedersen
I think your problem is that you assume that the bytes that represent the utf8 string will result in the same string when interpreted as something else (iso-8859-1). And that is simply just not the case. I recommend that you read this excellent articleby Joel spolsky.
我认为您的问题是您假设表示 utf8 字符串的字节在解释为其他内容时会产生相同的字符串（iso-8859-1）。而事实并非如此。我建议您阅读Joel spolsky 撰写的这篇优秀文章。
回答by Manu
Try this:
尝试这个：
Encoding iso = Encoding.GetEncoding("ISO-8859-1");
Encoding utf8 = Encoding.UTF8;
byte[] utfBytes = utf8.GetBytes(Message);
byte[] isoBytes = Encoding.Convert(utf8,iso,utfBytes);
string msg = iso.GetString(isoBytes);
回答by Sander A
Seems bit strange code. To get string from Utf8 byte stream all you need to do is:
看起来有点奇怪的代码。要从 Utf8 字节流中获取字符串，您需要做的就是：
string str = Encoding.UTF8.GetString(utf8ByteArray);
If you need to save iso-8859-1 byte stream to somewhere then just use: additional line of code for previous:
如果您需要将 iso-8859-1 字节流保存到某处，那么只需使用：前一行的附加代码行：
byte[] iso88591data = Encoding.GetEncoding("ISO-8859-1").GetBytes(str);
回答by Nicolai Nita
Just used the Nathan's solution and it works fine. I needed to convert ISO-8859-1 to Unicode:
刚刚使用了 Nathan 的解决方案，效果很好。我需要将 ISO-8859-1 转换为 Unicode：
string isocontent = Encoding.GetEncoding("ISO-8859-1").GetString(fileContent, 0, fileContent.Length);
byte[] isobytes = Encoding.GetEncoding("ISO-8859-1").GetBytes(isocontent);
byte[] ubytes = Encoding.Convert(Encoding.GetEncoding("ISO-8859-1"), Encoding.Unicode, isobytes);
return Encoding.Unicode.GetString(ubytes, 0, ubytes.Length);
回答by Tomá? Opis
Encoding targetEncoding = Encoding.GetEncoding(1252);
// Encode a string into an array of bytes.
Byte[] encodedBytes = targetEncoding.GetBytes(utfString);
// Show the encoded byte values.
Console.WriteLine("Encoded bytes: " + BitConverter.ToString(encodedBytes));
// Decode the byte array back to a string.
String decodedString = Encoding.Default.GetString(encodedBytes);
回答by Engin Kamarot
Here is a sample for ISO-8859-9;
这是 ISO-8859-9 的示例；
protected void btnKaydet_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/vnd.openxmlformatsofficedocument.wordprocessingml.documet";
Response.AddHeader("Content-Disposition", "attachment; filename=XXXX.doc");
Response.ContentEncoding = Encoding.GetEncoding("ISO-8859-9");
Response.Charset = "ISO-8859-9";
EnableViewState = false;
StringWriter writer = new StringWriter();
HtmlTextWriter html = new HtmlTextWriter(writer);
form1.RenderControl(html);
byte[] bytesInStream = Encoding.GetEncoding("iso-8859-9").GetBytes(writer.ToString());
MemoryStream memoryStream = new MemoryStream(bytesInStream);
string msgBody = "";
string Email = "[email protected]";
SmtpClient client = new SmtpClient("mail.xxxxx.org");
MailMessage message = new MailMessage(Email, "[email protected]", "ONLINE APP FORM WITH WORD DOC", msgBody);
Attachment att = new Attachment(memoryStream, "XXXX.doc", "application/vnd.openxmlformatsofficedocument.wordprocessingml.documet");
message.Attachments.Add(att);
message.BodyEncoding = System.Text.Encoding.UTF8;
message.IsBodyHtml = true;
client.Send(message);}
